Perfect matched & balanced pair of vintage Siemens E88CC/6922 Audio Tubes - Munich 1964 - Same date code - Strong NOS Tubes Summary Stronger than time! This is the classic beauty in sound, admired by audiophiles for almost 60 years and will still be our top choice in the next 60 years. Particularly, the early 60s Siemens tone is considered the reference sound for serious classical listeners who need to upgrade the sound quality at phono stage. Sound Characteristics The airy and transparent sound produced by these vintage Siemens tubes has been unrivaled even to this day. The magically extended yet never tizzy highs, coupled with the slightly focused upper mid-range, deliver a clear presentation of the entire frequency spectrum, completed by the precise and deep controlled bass. And the most defining sound characteristic of Siemens E88CC tubes is their ability to retrieve the deepest levels of detail in sound, and these hidden sonic layers can go a long way to revealing the subtle ambient clues that help complete building a truly 3D holographic presentation. While as quiet and analytical as the best Telefunken E88CC tubes, Siemens E88CCs produce a warmer, smoother and more musical sound. To see how the two German titans in vintage tube sound compare to each other, please check out our full sound review of 60s Telefunken E88CC here: https://www.ebay.com/itm/266252586987 Professional Sound Evaluation The pair worked wonderfully and sounded terrific in our professional studio setup for monitoring. - Input: Cambridge Audio CXC V2 dedicated CD transport + Schiit Audio Bifrost 2 Multibit DAC - Amplification: Liquid Platinum Tube Amplifier by Alex Cavalli - Output: Focal Clear MG Pro open-back headphones Our full tube sound review was written 100% based on the actual listening experience while this pair of tubes were running in the system described above. Professional Tube Testing Both tubes tested Strong NOS (110%+ mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): Tube 1: 14,200/13,900 Tube 2: 14,600/13,900 Good tubes start at 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and the Mercury 2000s rated mutual conductance (nominal) for new tubes is 12,500. Test result can also be seen in the pictures. In case you wonder what all these numbers mean to your sound experience, its actually quite straightforward: mutual conductance directly translates to a tubes ability to amplify sound so the higher the numbers the better. No shorts, gas grid leakages or microphonics. Appearance & Cosmetic condition Despite some loss of paint on one of the tubes, this pair overall is in great cosmetic condition. The identical 3-line Munich date code etched on the glass is perfectly visible on both tubes: A0 1# 4K (A0 = E88CC, # = Munich, 4 = 1964, K = November) Packaging This pair of tubes will be packaged in the new Siemens tube boxes, secured by a hand-made paper ribbon (by courtesy of Soundlumia.) Shipping Policy - Ship worldwide! Flat-rate shipping to all states in the US via USPS Ground Advantage (formerly known as USPS First Class Package.) - Same business day handling. Orders placed by 2:00PM US Pacific Time on weekdays are posted on the same day, otherwise the next business day. - Combined shipping available - request invoice for total before making payment or receive shipping credit after order ships. - Customers outside the US please pay extra attention: International shipping is through USPS Ground Advantage by default. Its the least expensive option and includes insurance up to $100 but it may take longer than other carriers. If you prefer to use a different carrier or if you want to protect your purchase with additional insurance, which we strongly recommend it for orders over $300, please contact us before you buy so we can get you the correct shipping rates before you make payment. Return Policy - Please READ carefully First of all, returns are acceptable as long as you are reasonable. We set extremely high quality standard for the products we deliver. Tubes we sell are guaranteed to work because we run professional tests and sound evaluation before they are approved for listing AND before we ship them to customers. So the defective item case doesnt exist and please do not bother trying - this type of returns will NOT be accepted without proof that tubes do not work and we will open a dispute with eBay. Sound experience is a very subjective thing, and lets be real its not that easy to run into compatibility issues between amps and tubes (so that one wont fly, either.) Please contact us to work things out before submitting return requests claiming item is defective or item not as described. We would really appreciate your respect to the professional work we have done (sourcing, testing & matching tubes, evaluating tube sound, sharing our sound experience with you, packing and shipping) to make these wonderful vintage tubes available to you at reasonable prices. Secondly, if you are a tube roller looking to game the return system, Number One STOP. We have seen it all and we know what youre up to. No tricks here please. Abusive behaviors will be reported to eBay immediately and negative feedback will be left to your account - thats guaranteed. We have already reported several abusers and eBay has ruled in our favor the dispute cases. We are more determined than ever to continue working with eBay to help rid of these unprofessional, unjustified, unkind, unfair and unacceptable abuses that are detrimental to the eBay marketplace, the vintage tubes market and the audiophile community.

early production siemens e88cc 6922 audio tube, legendary germany musical stagenatural response realistic imaging linear transparency deep warm bass scalloped air halo!real old label authentic germany marks / proprietary cali pro refurb process / audio gradematched balanced pristine mutual gm triodes 100% / siemens tube box included / ships fast ~see our other listings for alternate listening positions! bid/buy/best offer~~cali acoustics~ vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hificaliacoustics insta (active) / caliacoustics dot com (soon) ~ 6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~ 12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~ ~ 6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 ~ ~preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audioresearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk +more apps~

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED PAIR 2 Pcs NOSEXTRA BALANCED !!! EXTRA MATCHED !!!NOS Siemens Halske CCa = E88CC 6922 Grey-Shield HOLY GRAILS 1963 and 1964ACID CODES :Code: A? 1? 3A and A? 1? 4E O-getter,one stage geter ,gray shield ,The gray shieldSTA do you think how many CCa tubes of this type needed to be measured to select this pair?MUCH MORE THAN YOU THINK !!! Probably no one in this world has a pair of CCs like this because there are NO more of them !!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 2 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% tubes Ia = 20/19mA and Ia = 19/20 mA

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED QUAD 4 Pcs NOS Code: tubes A6 / 4G and A6 / 3I and A6 /4I and A6 / 4CO-getter,A-frame ,The chrome shieldMany e88cc tubes needed to pair this pair matched to several criteria: date of production - same series and electrical characteristics. such pairing is rareEXTRA MATCHED QUAD !!! EXTRA RARE!!!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 4 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% two tubes Ia = 15/14 mA and two tubes Ia = 15/15 mA

Up for auction is one pair Very rare 1950S NOS Siemens D getter E88CC tubes , This pair tubes are Germany made and have the Gray Shield , Golden pins .One tube is printed the Siemens logo but another one is printed the Telefunken logo .Although the printed logos are different , the structures of this pair tubes are the same . Because of the old age , the printing are worn off much , see scan . it’s the famous E88CC / CCa version for audio . No original boxes . The tubes tested strong and balance ,The tested value ( emission current ) : 17.1mA/15.5mA and 16.5mA/15.6mA .The test condition : Va : 90 VDC , Vg : -1.2 VDC , Vf : 6.3 VDC , and Burn up around 10~15 minutes to stabilize for testing .For a new E88CC tube , the emission current is around 15mA/15mA . Please note : Buyer pay for the customs fees , taxes .. < Shipping > Buyer pay additional $15 USD for registered air-parcel worldwide . No insurance , if need insurance , please contact us to ask before bidding . Combine shipping is possible .

Up for auction is one quad rare early 1960S Siemens NOS E88CC tubes , Germany made ,see scanThis four tubes have the Gray Shield , Golden pins , and the same etched code “ A?1?5A “ , also the same batch code 35 108 , it’s the famous E88CC / CCa version for audio . No original boxes . The tubes tested strong ,The tested value ( emission current ) :16.5mA/18.9mA , 17.9mA/16.6mA , 15.4mA/15.4mA and 15.0mA/16.8mA .The test condition : Va : 90 VDC , Vg : -1.2 VDC , Vf : 6.3 VDC , and Burn up around 10~15 minutes to stabilize for testing .For a new E88CC tube , the emission current is around 15mA/15mA . Please note : Buyer pay for the customs fees , taxes .. < Shipping > Buyer pay additional $15 USD for registered air- parcel worldwide . No insurance , if need insurance , please contact us to ask before bidding . Combine shipping is possible .

2 grail siemens germany e188cc/7308 audio tubesbest type to hear/collect, wettest of all siemens / closest to pinchedrare e88cc/6922/cca upgrade w/ longer life lower noise rugged stabilizer plate internalsnos balanced 126/128~114/108 % mutual gm (100+nos) ~cali acoustics~~see our other listings for alternate listening positions! bid/buy/best offer~ ~vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hifi~caliacoustics instagram live / caliacoustics.com (soon!)~ ~6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~ ~6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 (new!) ~preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audioresearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk +more apps~

Tested on a fully restored TV7-DU, by Dan Nelson, pictures of evidence for this included in the listing. It was restored and calibrated on October 21st 2021. Tubes are tested for shorts. PC= Plate Current DC= Date Code Please note, TV7 data minimum is equal to 60%. For example, (insert model number here) min value 60. If the tube tests at minimum 60, that is equal to 60%. The number over (/) is the minimum test data result as described in the TV7 DU tube testing manual. So 60/ (min) 60 = 60% Rare set, high NOS values, same date 1. 100.5/62 PC 22.4120/62 PC 26.8 2.108.5/62 PC 24.3113/62 PC 26.6I mark all my tubes, so please dont waste your time seeking to send me back your old dead tubes. All testers read differently. I have sought to have my tester as accurate as possible. I will not be giving partial refunds because you have received different test result. All tubes will be shipped well, an example of how I pack is pictured in the listing. (obviously these tubes are not included) I wont be lying on a customs form I combine shipping. If the tubes are of significant value, the postage will be extra due to insurance.

Up for auction is one Very rare 1950S NOS Siemens D getter E88CC tube , Gray Shield , Golden pins .This tube is Germany made and is tested very strong and balance .Because of the old age , the printing are worn off much , see scan . it’s the famous E88CC / CCa version for audio . No original boxes . The tested value ( emission current ) : 18.2mA/18.9mA .The test condition : Va : 90 VDC , Vg : -1.2 VDC , Vf : 6.3 VDC , and Burn up around 10~15 minutes to stabilize for testing .For a new E88CC tube , the emission current is around 15mA/15mA . Please note : Buyer pay for the customs fees , taxes .. < Shipping > Buyer pay additional $15 USD for registered air-parcel worldwide . No insurance , if need insurance , please contact us to ask before bidding . Combine shipping is possible .

Up for auction is one pair Very rare 1950S NOS Siemens D getter E88CC tubes , This pair tubes are Germany made and have the Gray Shield , Golden pins .One tube is printed the Siemens logo but another one is printed the Telefunken logo .Although the printed logos are different , the structures of this pair tubes are the same . Because of the old age , the printing are worn off much , see scan . it’s the famous E88CC / CCa version for audio . No original boxes . The tubes tested strong and balance ,The tested value ( emission current ) : 17.1mA/15.5mA and 16.5mA/15.6mA .The test condition : Va : 90 VDC , Vg : -1.2 VDC , Vf : 6.3 VDC , and Burn up around 10~15 minutes to stabilize for testing .For a new E88CC tube , the emission current is around 15mA/15mA . Please note : Buyer pay for the customs fees , taxes .. < Shipping > Buyer pay additional $15 USD for registered air-parcel worldwide . No insurance , if need insurance , please contact us to ask before bidding . Combine shipping is possible .

Up for auction is one quad rare early 1960S Siemens NOS E88CC tubes , Germany made ,see scanThis four tubes have the Gray Shield , Golden pins , and the same etched code “ A?1?5A “ , also the same batch code 35 108 , it’s the famous E88CC / CCa version for audio . No original boxes . The tubes tested strong ,The tested value ( emission current ) :16.5mA/18.9mA , 17.9mA/16.6mA , 15.4mA/15.4mA and 15.0mA/16.8mA .The test condition : Va : 90 VDC , Vg : -1.2 VDC , Vf : 6.3 VDC , and Burn up around 10~15 minutes to stabilize for testing .For a new E88CC tube , the emission current is around 15mA/15mA . Please note : Buyer pay for the customs fees , taxes .. < Shipping > Buyer pay additional $15 USD for registered air- parcel worldwide . No insurance , if need insurance , please contact us to ask before bidding . Combine shipping is possible .

old stock siemens cca gold pin audiophile tube, hifidelity grail tone / premium e88cc/6922legendary linear stage w/ lowest harmonic distortion / pro musical instrument separationauthentic germany vintage warm build w/ real old label (beware of relabelers)balance matched mutual gm fully tested, ships w/ siemens tube box well packed ~see our other listings for alternate listening positions, bid/buy/best offer~~cali acoustics~~ vintage hifidelity / vacuum tube pro audio / warm bright lofi hifi tone ~~ 6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~12ax7 12au7 12at7 ~ ecc83 ecc82 ecc81 ~ ~ 6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34) ~ preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audiotesearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk +more apps~

Perfect matched & balanced pair of vintage Siemens E88CC/6922 Audio Tubes - Munich 1964 - Same date code - Strong NOS Tubes Summary Stronger than time! This is the classic beauty in sound, admired by audiophiles for almost 60 years and will still be our top choice in the next 60 years. Particularly, the early 60s Siemens tone is considered the reference sound for serious classical listeners who need to upgrade the sound quality at phono stage. Sound Characteristics The airy and transparent sound produced by these vintage Siemens tubes has been unrivaled even to this day. The magically extended yet never tizzy highs, coupled with the slightly focused upper mid-range, deliver a clear presentation of the entire frequency spectrum, completed by the precise and deep controlled bass. And the most defining sound characteristic of Siemens E88CC tubes is their ability to retrieve the deepest levels of detail in sound, and these hidden sonic layers can go a long way to revealing the subtle ambient clues that help complete building a truly 3D holographic presentation. While as quiet and analytical as the best Telefunken E88CC tubes, Siemens E88CCs produce a warmer, smoother and more musical sound. To see how the two German titans in vintage tube sound compare to each other, please check out our full sound review of 60s Telefunken E88CC here: https://www.ebay.com/itm/266252586987 Professional Sound Evaluation The pair worked wonderfully and sounded terrific in our professional studio setup for monitoring. - Input: Cambridge Audio CXC V2 dedicated CD transport + Schiit Audio Bifrost 2 Multibit DAC - Amplification: Liquid Platinum Tube Amplifier by Alex Cavalli - Output: Focal Clear MG Pro open-back headphones Our full tube sound review was written 100% based on the actual listening experience while this pair of tubes were running in the system described above. Professional Tube Testing Both tubes tested NOS (100%+ mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): Tube 1: 13,200/13,000 Tube 2: 13,000/12,700 Good tubes start at 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and the Mercury 2000s rated mutual conductance (nominal) for new tubes is 12,500. Test result can also be seen in the pictures. In case you wonder what all these numbers mean to your sound experience, its actually quite straightforward: mutual conductance directly translates to a tubes ability to amplify sound so the higher the numbers the better. No shorts, gas grid leakages or microphonics. Appearance & Cosmetic condition Despite some loss of paint on one of the tubes, this pair overall is in great cosmetic condition. The identical 3-line Munich date code etched on the glass is perfectly visible on both tubes: A0 1# 4K (A0 = E88CC, # = Munich, 4 = 1964, K = November) Shipping Policy - Ship worldwide! Flat-rate shipping (USPS First-Class) within the US. - Same business day handling. Orders placed by 2:00PM US Pacific Time on weekdays are posted on the same day, otherwise the next business day. - Combined shipping available. Please request invoice for total before making payment or receive shipping credit after order ships. - Customers outside the US please pay extra attention: International shipping is through USPS First Class Mail International by default. Its the least expensive option (even cheaper than eBay International Shipping) but may take longer than other carriers. If you prefer to use a different carrier please contact us before you buy so we can get you the correct shipping rates. Return Policy - Please READ carefully First of all, returns are acceptable as long as you are reasonable. Soundlumia sets extremely high quality standard for the products we deliver. Tubes we sell are guaranteed to work because we run professional tests and sound evaluation before they are approved for listing AND before we ship them to customers. So the defective item case doesnt exist and please do not bother trying - this type of returns will NOT be accepted without proof that tubes do not work and we will open a dispute with eBay. Sound experience is a very subjective thing, and lets be real its not that easy to run into compatibility issues between amps and tubes (so that one wont fly, either.) Please contact us to work things out before submitting return requests claiming item is defective or item not as described. We would really appreciate your respect to the professional work we have done (sourcing, testing & matching tubes, evaluating tube sound, sharing our sound experience with you, packing and shipping) to make these wonderful vintage tubes available to you at reasonable prices. Secondly, if you are a tube roller looking to game the return system, Number One STOP. Soundlumias founder is a seasoned sound professional who has advised orchestras and music studios in sound production in USA for over two decades, and knowing sound is the minimum skill requirement of our team. No tricks here please. Abusive behaviors will be reported to eBay immediately and negative feedback will be left to your account - thats guaranteed. We have already reported several abusers and eBay has ruled in our favor the dispute cases. We are more determined than ever to continue working with eBay to help rid of these unprofessional, unjustified, unkind, unfair and unacceptable abuses that are detrimental to the eBay marketplace, the vintage tubes market and the audiophile community.

Up for auction is one Very rare 1950S NOS Siemens D getter E88CC tube , Gray Shield , Golden pins .This tube is Germany made and is tested very strong and balance .Because of the old age , the printing are worn off much , see scan . it’s the famous E88CC / CCa version for audio . No original boxes . The tested value ( emission current ) : 18.2mA/18.9mA .The test condition : Va : 90 VDC , Vg : -1.2 VDC , Vf : 6.3 VDC , and Burn up around 10~15 minutes to stabilize for testing .For a new E88CC tube , the emission current is around 15mA/15mA . Please note : Buyer pay for the customs fees , taxes .. < Shipping > Buyer pay additional $15 USD for registered air-parcel worldwide . No insurance , if need insurance , please contact us to ask before bidding . Combine shipping is possible .

Up for auction is one pair Very rare 1950S NOS Siemens D getter E88CC tubes , This pair tubes are Germany made and have the Gray Shield , Golden pins .One tube is printed the Siemens logo but another one is printed the Telefunken logo .Although the printed logos are different , the structures of this pair tubes are the same . Because of the old age , the printing are worn off much , see scan . it’s the famous E88CC / CCa version for audio . No original boxes . The tubes tested strong and balance ,The tested value ( emission current ) : 17.1mA/15.5mA and 16.5mA/15.6mA .The test condition : Va : 90 VDC , Vg : -1.2 VDC , Vf : 6.3 VDC , and Burn up around 10~15 minutes to stabilize for testing .For a new E88CC tube , the emission current is around 15mA/15mA . Please note : Buyer pay for the customs fees , taxes .. < Shipping > Buyer pay additional $15 USD for registered air-parcel worldwide . No insurance , if need insurance , please contact us to ask before bidding . Combine shipping is possible .

Up for auction is one quad rare early 1960S Siemens NOS E88CC tubes , Germany made ,see scanThis four tubes have the Gray Shield , Golden pins , and the same etched code “ A?1?5A “ , also the same batch code 35 108 , it’s the famous E88CC / CCa version for audio . No original boxes . The tubes tested strong ,The tested value ( emission current ) :16.5mA/18.9mA , 17.9mA/16.6mA , 15.4mA/15.4mA and 15.0mA/16.8mA .The test condition : Va : 90 VDC , Vg : -1.2 VDC , Vf : 6.3 VDC , and Burn up around 10~15 minutes to stabilize for testing .For a new E88CC tube , the emission current is around 15mA/15mA . Please note : Buyer pay for the customs fees , taxes .. < Shipping > Buyer pay additional $15 USD for registered air- parcel worldwide . No insurance , if need insurance , please contact us to ask before bidding . Combine shipping is possible .

2 grail grey mica siemens e188cc audio tubes, the old best versions to hear/collect period!famed for lowest distortion / low end boost over e88cc/6922 design / wettest of all siemens tones126/128 ~ 114/108 % mutual gm (100+nos/65+good) ~see our other listings for alternate listening positions! bid/buy/best offer~~vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hifi~caliacoustics instagram live / caliacoustics.com (soon!)~~cali acoustics~ ~6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~ ~6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 (new!) ~preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audiotesearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk +more apps~

old stock siemens e88cc audiophile tube, hifidelity authentic germany tone, real old label/fragilelegendary musicality! lowest rated harmonic distortion pro instrument separation warm 60sbalance matched 100% mutual gm (100+nos/65+good) audio grade circuit ready ~see our other listings for alternate listening positions! bid/buy/best offer~~vintage hifidelity vacuum tube pro audio / warm bright lofi hifi tone~caliacoustics instagram (live) / caliacoustics dot com (soon!)~~cali acoustics~ ~ 6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc ~~ 12ax7 12au7 12at7 / ecc83 ecc82 ecc81 ~~ 6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85 ~ 6ca7 el34 ~ ~preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audiotesearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk + more apps!~

old stock siemens cca gold pin audiophile tube, hifidelity tone authentic germany real label!legendary linearity lowest harmonic distortion pro musical instrument separation and more ~see our other listings for alternate listening positions, bid/buy/best offer~~cali acoustics~~ vintage hifidelity tone / vacuum tube pro audio / warm bright lofi hifi ~~ 6dj8 7dj8 6922 7308 / ecc88 pcc88 e88cc e188cc cv2492 cca ~~12ax7 12au7 12at7 ~ ecc83 ecc82 ecc81 ~ ~ 6bq5 el84 ~ 6267 ef86 ~ 6aq8 ecc85~ 6ca7 el34 (new!)~ preamps stereos vocals instruments mics rode k2/ntk audio technica at-4060 bluemics wooaudio liquidplatinum aesthetix cat audiotesearch arc echo ear herron decco lector manley horizons conrad frontiers pathos marantz vac psaudiobhk +more apps! ~ caliacoustics.com (soon!) ~

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED QUAD 4 Pcs NOS Code: tubes A6 / 4G and A6 / 3I and A6 /4I and A6 / 4CO-getter,A-frame ,The chrome shieldMany e88cc tubes needed to pair this pair matched to several criteria: date of production - same series and electrical characteristics. such pairing is rareEXTRA MATCHED QUAD !!! EXTRA RARE!!!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 4 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% two tubes Ia = 15/14 mA and two tubes Ia = 15/15 mA

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED PAIR 2 Pcs NOSEXTRA BALANCED !!! EXTRA MATCHED !!!NOS Siemens Halske CCa = E88CC 6922 Grey-Shield HOLY GRAILS 1963 and 1964ACID CODES :Code: A? 1? 3A and A? 1? 4E O-getter,one stage geter ,gray shield ,The gray shieldSTA do you think how many CCa tubes of this type needed to be measured to select this pair?MUCH MORE THAN YOU THINK !!! Probably no one in this world has a pair of CCs like this because there are NO more of them !!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 2 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% tubes Ia = 20/19mA and Ia = 19/20 mA

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED QUAD 4 Pcs NOS Code: tubes A6 / 4G and A6 / 3I and A6 /4I and A6 / 4CO-getter,A-frame ,The chrome shieldMany e88cc tubes needed to pair this pair matched to several criteria: date of production - same series and electrical characteristics. such pairing is rareEXTRA MATCHED QUAD !!! EXTRA RARE!!!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 4 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% two tubes Ia = 15/14 mA and two tubes Ia = 15/15 mA

CCa E88CC E188CC 6922 SIEMENS HALSKE MUNICH GERMANY MATCHED PAIR 2 Pcs NOSEXTRA BALANCED !!! EXTRA MATCHED !!!NOS Siemens Halske CCa = E88CC 6922 Grey-Shield HOLY GRAILS 1963 and 1964ACID CODES :Code: A? 1? 3A and A? 1? 4E O-getter,one stage geter ,gray shield ,The gray shieldSTA do you think how many CCa tubes of this type needed to be measured to select this pair?MUCH MORE THAN YOU THINK !!! Probably no one in this world has a pair of CCs like this because there are NO more of them !!This version with gold pins is professional and allows work of 10000 hours !!!!It is very difficult to pair 4 tubes and to keep each of them balanced. Before recording the characteristics, all CC tubes are aged for 72 hours in a specially made device and then tested and selected. For these 2 tubes it took over 50 tubes to select a that, you will admit it is very difficult. and theres no need to brag about those tubes - take a look on the net and everything will be clearwhy do I have to age them for 72 hours. Since I give the electrical characteristics of the tubes and for that to be correct, the CC tubes must be forced to work for at least 48 hours in order to equalize the working mode and only then the characteristics are recorded. the current Ia measured on that occasion does not have to be 16 mA and that is 100%, they can be higher and lower, within some limits - there are some on the NET, but it is important that the triodes in the balloon tubes CCa are as uniform as possible . And thats except Ia - mA quality which is primary for me and as a third reference, if I can, give the code .its nice to be harmonized due to the later exploitation of tubes-10000 hours.They are also tested for gas, short and leakageNote: The measurements were carried out with Neuberger RPM370 saw and guarantee for this measurement. The tester has its technical and electrical characteristics that participate in the activities and measuring tubes. Each tube is a special electric circuit that works in conjunction with the saw and this gives measured values. Power saws with classic rectifier and everything else and it has its own impedance, etc ... Digital testers can not give the same measurement results as the classical tester for impedance, reactance, capacitance, conductance, the mode power supply - Switching etc . Tested for NEUBERGER RPM370,Ua=100V,Ug=-1.2V,Ig=16mA=100% tubes Ia = 20/19mA and Ia = 19/20 mA

Siemens E88CC/6922 Audio Tube - Telefunken label - West Germany 1968 - Strong NOS Note: If you need a pair of late 1960s Siemens E88CC tubes instead, please see our listing of 1969/1970 Siemens E88CC/6922 Tubes Matched Pair here: https://www.ebay.com/itm/266274273460 Tube Summary Stronger than time! This is the classic E88CC/6922 beauty admired by audiophiles for over 50 years and will still be their top choice in the next 50 years. Look no further if you are seeking the greatest E88CC/6922 tube sound. Sound Characteristics The airy and transparent sound produced by these vintage Siemens tubes has been unrivaled even to this day. The magically extended yet never tizzy highs, coupled with the slightly focused upper mid-range, deliver a clear presentation of the entire frequency spectrum, which is completed by the precise and deep controlled bass. And the most defining sound characteristic of Siemens E88CC tubes is their ability to retrieve the deepest levels of detail in sound, and these hidden sonic layers can go a long way to revealing the subtle ambient clues that help build a truly 3D holographic presentation. Appearance & Cosmetic condition Beside the world-class sound characteristics, we treasure this pair because of its pristine condition - nearly 100% of the paint is intact, and the date code stamped on the metal tag inside the glass is perfectly visible: A4 8G (A4 = E88CC, 8 = 1968, G = July.) Professional Tube Testing The tube tested Strong NOS (110%+ nominal mutual conductance) on a Mercury 2000 tube tester with the following result (mutual conductance in uMhos): 13,300/14,000 Good tubes start around 7000 and new tubes (incl. NOS/NIB) 12,500 - 13,000, and Mercury 2000s rated mutual conductance (nominal) for new tubes is 12,500. Test result can also be seen in the pictures. In case you wonder what all these numbers would mean to your sound experience, its actually quite straightforward: mutual conductance directly translates to a tubes ability to amplify sound so the higher the numbers the stronger. Shipping Policy - Customers outside the US please pay extra attention - Same business day handling. Orders placed by 2:00PM US Pacific Time on weekdays are posted on the same day, otherwise the next business day. - Ship worldwide! Flat-rate shipping within the US. Combined shipping available - request invoice for total before making payment or receive shipping credit after order ships. - International shipping is through eBay International Shipping program by default. Its the least expensive option and customs declaration is automated but it may take longer than other carriers. If you prefer to use a different carrier please contact us before you buy so we can get you the correct shipping rates. Return Policy - Please READ carefully First of all, returns are acceptable as long as you are reasonable. Soundlumia sets extremely high standard on the quality of products we deliver. Tubes we sell are guaranteed to work because we run professional tests and sound evaluation before they are approved for listing. However, sound experience is a very subjective thing and its not uncommon to run into combability issues due to different amp designs, please contact us to work things out before submitting returns or opening a item not as described case on eBay. We would really appreciate your respect to the professional work we have done (sourcing, testing & matching tubes, evaluating tube sound and sharing our sound experience with the world through this listing) to make these wonderful vintage tubes available to you at reasonable prices. Secondly, if you are a tube roller looking to game the return system, Number One STOP. Soundlumias founder is a sound professional who has advised orchestras and music studios in sound production in the USA for over two decades, so knowing sound is the minimum skill requirement of our team. We are experts in sound and equipment - tubes, headphones, speakers, DACs, amps, turntables, CD Players - you name it. So no tricks here please. Abusive behaviors will be reported to eBay immediately and negative feedback will be left to your account - thats also guaranteed.