5x TUNG-SOL ECC83 Valves Manufactured in 1963. Tested by AVO VCM Tester *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20220412L027

CV492 (ECC83 12AX7) aerospace quality ex aircraft valve made by STC code KB/FD. Tested good for voltage gain = 500 (54dB) HT 200v Ra 220K Rk 1K Ia 0.5mA Heater/K > 20M ohms Auction is for 1 off valve More than one available

AUDIOPHILE QUALITY SELECT AUDIO TUBE1x ECC83 Mullard / Valvo Label mcp DL Code > D-Getter > 45° take the best >Roe-Test-V10 Computer Measuring:> 1,5 / 1,4 mA = Strong / NEW / NOS1,2 /1,2 mA = 100 %no klicks ...Sie Bieten auf 1. Stück >> It offering on 1.st piecesee they on my ** me side ** for more info > ROE-TEST

CV492 (ECC83 12AX7) aerospace quality ex aircraft valve made by STC code KB/FD. Tested good for voltage gain = 500 (54dB) HT 200v Ra 220K Rk 1K Ia 0.5mA Heater/K > 20M ohms Auction is for 1 off valve More than one available

12AX7 QK VALVE RING GETTER TUBE CV492 KD? EGI SPEC 2.0V SPEC 1.60EGI MEAS 1.5V SPEC .80 ma/v 75% Emis 50%GmEGI MEAS 1.4V SPEC .90 ma/v 70% Emis 56% gm

CV492 (ECC83 12AX7) aerospace quality ex aircraft valve made by Mullard code KB/DA. Tested good for voltage gain = 500 (54dB) HT 200v Ra 220K Rk 1K Ia 0.5mA Heater/K > 20M ohms Auction is for 1 off valve.

CV492 (ECC83 12AX7) aerospace quality ex aircraft valve made by STC code KB/FD. Tested good for voltage gain = 500 (54dB) HT 200v Ra 220K Rk 1K Ia 0.5mA Heater/K > 20M ohms Auction is for 1 off valve More than one available

Mullard ECC83, CV492, 12AX7, Halo Ring Valve/Tube (17) No Shorted Tested Good. Tested on an emc 215 Tested good and has no shorts Ignore (17) that’s for my reference Uk only

***** RARE NOS Condition!! ***** ** PERFECT BALANCED Plates!! ** *** Tested NEW NOS!! *** 1962 Mullard British Military TubeBlackburn Factory (code i61 B2I1)CV492 KB/DA 12AX7 ECC83 SHORT Ribbed Grey PLATES O Getter Tube BOGEN AMP Tested - No microphonics TV-7/u Tested Condition Report: ** Tubes TESTED AND sounded good in my BOGEM AMP! No microphonics! ** ** I WILL COMBINE SHIPPING COST ON M Tested to be in guaranteed working conditionI tested these on a High Quality Professonal Hickok TV-7/U Tester:TUBEs TEST RESULTs: Tube: 50/50 - {Minimum Rating of 32/32 for TV-7 Testers are equal to 65% of average new ratings.} If you have Questions or Comments contact me on eBay Check out the photos! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! I Combine Y ITEMS!!! ** ShippingBefore You Pay. I accept PayPal and Postal M O.Please see click to enlarge photos for condition and quality.Check out My Other Items For Sale!WILL BE SHIPPED OUT FAST! Before bidding please read my shipping and return policy. I WILL COMBINE SHIPPING COST ON MY ITEMS!!! NOTE: International buyers - THE BUYER IS RESPONSIBLE FOR SHIPPING FEES. INTERNATIONAL BIDS WELCOME. I WONT CHANGE DECLARED VALUE ON CUSTOM FORMS AND INTERNATIONAL BUYERS ARE RESPONSIBLE FOR ALL TAXES, CUSTOM FEES, and additional shipping fees. ANY RETURN WILL BE ACCEPTED BUT BUYER WILL PAY SHIPPING FEES AND I WILL NOT REFUND ANY SHIPPING FEES.*TESTED ON Calibrated HICKOK TV-7 B/U*{Minimum Ratings for TV-7 Testers are equal to 65% of average new ratings.}ALL tubes will be ran through a Daniel Nelson calibrated HICKOK TV-7 B/U for a full mutual conductance test. This is a world class tester that is calibrated by the Hickok doctor. Its test results are dead on and you can buy with confidence. If you want to know what the exact Gm rating of the tube is please message me. My Return Policy: Will not accept returns for reasons such as ordered the wrong item, change mind, not what I thought It was, wrong color ordered, item ordered.

CV492 (ECC83 12AX7) aerospace quality ex aircraft valve made by STC code KB/FD. Tested good for voltage gain = 500 (54dB) HT 200v Ra 220K Rk 1K Ia 0.5mA Heater/K > 20M ohms Auction is for 1 off valve More than one available

CV492 (ECC83 12AX7) aerospace quality ex aircraft valve made by Mullard code KB/DA. Tested good for voltage gain = 500 (54dB) HT 200v Ra 220K Rk 1K Ia 0.5mA Heater/K > 20M ohms Auction is for 1 off valve More than one available

***** RARE NOS Condition!! ***** ** PERFECT BALANCED Plates!! ** *** Tested NEW NOS!! *** 1962 Mullard British Military TubeBlackburn Factory (code i61 B2I1)CV492 KB/DA 12AX7 ECC83 SHORT Ribbed Grey PLATES O Getter Tube BOGEN AMP Tested - No microphonics TV-7/u Tested Condition Report: ** Tubes TESTED AND sounded good in my BOGEM AMP! No microphonics! ** ** I WILL COMBINE SHIPPING COST ON M Tested to be in guaranteed working conditionI tested these on a High Quality Professonal Hickok TV-7/U Tester:TUBEs TEST RESULTs: Tube: 50/50 - {Minimum Rating of 32/32 for TV-7 Testers are equal to 65% of average new ratings.} If you have Questions or Comments contact me on eBay Check out the photos! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! I Combine Y ITEMS!!! ** ShippingBefore You Pay. I accept PayPal and Postal M O.Please see click to enlarge photos for condition and quality.Check out My Other Items For Sale!WILL BE SHIPPED OUT FAST! Before bidding please read my shipping and return policy. I WILL COMBINE SHIPPING COST ON MY ITEMS!!! NOTE: International buyers - THE BUYER IS RESPONSIBLE FOR SHIPPING FEES. INTERNATIONAL BIDS WELCOME. I WONT CHANGE DECLARED VALUE ON CUSTOM FORMS AND INTERNATIONAL BUYERS ARE RESPONSIBLE FOR ALL TAXES, CUSTOM FEES, and additional shipping fees. ANY RETURN WILL BE ACCEPTED BUT BUYER WILL PAY SHIPPING FEES AND I WILL NOT REFUND ANY SHIPPING FEES.*TESTED ON Calibrated HICKOK TV-7 B/U*{Minimum Ratings for TV-7 Testers are equal to 65% of average new ratings.}ALL tubes will be ran through a Daniel Nelson calibrated HICKOK TV-7 B/U for a full mutual conductance test. This is a world class tester that is calibrated by the Hickok doctor. Its test results are dead on and you can buy with confidence. If you want to know what the exact Gm rating of the tube is please message me. My Return Policy: Will not accept returns for reasons such as ordered the wrong item, change mind, not what I thought It was, wrong color ordered, item ordered.

***** RARE NOS Condition!! ***** ** PERFECT BALANCED Plates!! ** *** Tested NEW NOS!! *** 1962 Mullard British Military TubeBlackburn Factory (code i61 B2I1)CV492 KB/DA 12AX7 ECC83 SHORT Ribbed Grey PLATES O Getter Tube BOGEN AMP Tested - No microphonics TV-7/u Tested Condition Report: ** Tubes TESTED AND sounded good in my BOGEM AMP! No microphonics! ** ** I WILL COMBINE SHIPPING COST ON M Tested to be in guaranteed working conditionI tested these on a High Quality Professonal Hickok TV-7/U Tester:TUBEs TEST RESULTs: Tube: 50/50 - {Minimum Rating of 32/32 for TV-7 Testers are equal to 65% of average new ratings.} If you have Questions or Comments contact me on eBay Check out the photos! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! I Combine Y ITEMS!!! ** ShippingBefore You Pay. I accept PayPal and Postal M O.Please see click to enlarge photos for condition and quality.Check out My Other Items For Sale!WILL BE SHIPPED OUT FAST! Before bidding please read my shipping and return policy. I WILL COMBINE SHIPPING COST ON MY ITEMS!!! NOTE: International buyers - THE BUYER IS RESPONSIBLE FOR SHIPPING FEES. INTERNATIONAL BIDS WELCOME. I WONT CHANGE DECLARED VALUE ON CUSTOM FORMS AND INTERNATIONAL BUYERS ARE RESPONSIBLE FOR ALL TAXES, CUSTOM FEES, and additional shipping fees. ANY RETURN WILL BE ACCEPTED BUT BUYER WILL PAY SHIPPING FEES AND I WILL NOT REFUND ANY SHIPPING FEES.*TESTED ON Calibrated HICKOK TV-7 B/U*{Minimum Ratings for TV-7 Testers are equal to 65% of average new ratings.}ALL tubes will be ran through a Daniel Nelson calibrated HICKOK TV-7 B/U for a full mutual conductance test. This is a world class tester that is calibrated by the Hickok doctor. Its test results are dead on and you can buy with confidence. If you want to know what the exact Gm rating of the tube is please message me. My Return Policy: Will not accept returns for reasons such as ordered the wrong item, change mind, not what I thought It was, wrong color ordered, item ordered.

***** RARE NOS Condition!! ***** ** PERFECT BALANCED Plates!! ** *** Tested NEW NOS!! *** 1962 Mullard British Military TubeBlackburn Factory (code i61 B2I1)CV492 KB/DA 12AX7 ECC83 SHORT Ribbed Grey PLATES O Getter Tube BOGEN AMP Tested - No microphonics TV-7/u Tested Condition Report: ** Tubes TESTED AND sounded good in my BOGEM AMP! No microphonics! ** ** I WILL COMBINE SHIPPING COST ON M Tested to be in guaranteed working conditionI tested these on a High Quality Professonal Hickok TV-7/U Tester:TUBEs TEST RESULTs: Tube: 50/50 - {Minimum Rating of 32/32 for TV-7 Testers are equal to 65% of average new ratings.} If you have Questions or Comments contact me on eBay Check out the photos! TESTED WITH a (TV-7/U) FOR GAS, SHORTS, AND MUTUAL CONDUCTANCE AND ARE MOSTLY STRONG TUBES! I Combine Y ITEMS!!! ** ShippingBefore You Pay. I accept PayPal and Postal M O.Please see click to enlarge photos for condition and quality.Check out My Other Items For Sale!WILL BE SHIPPED OUT FAST! Before bidding please read my shipping and return policy. I WILL COMBINE SHIPPING COST ON MY ITEMS!!! NOTE: International buyers - THE BUYER IS RESPONSIBLE FOR SHIPPING FEES. INTERNATIONAL BIDS WELCOME. I WONT CHANGE DECLARED VALUE ON CUSTOM FORMS AND INTERNATIONAL BUYERS ARE RESPONSIBLE FOR ALL TAXES, CUSTOM FEES, and additional shipping fees. ANY RETURN WILL BE ACCEPTED BUT BUYER WILL PAY SHIPPING FEES AND I WILL NOT REFUND ANY SHIPPING FEES.*TESTED ON Calibrated HICKOK TV-7 B/U*{Minimum Ratings for TV-7 Testers are equal to 65% of average new ratings.}ALL tubes will be ran through a Daniel Nelson calibrated HICKOK TV-7 B/U for a full mutual conductance test. This is a world class tester that is calibrated by the Hickok doctor. Its test results are dead on and you can buy with confidence. If you want to know what the exact Gm rating of the tube is please message me. My Return Policy: Will not accept returns for reasons such as ordered the wrong item, change mind, not what I thought It was, wrong color ordered, item ordered.

VERY RARE STRONG MULLARD CV492 ECC83 12AX7 LONG PLATES SQUARE GETTER 1600 F4 CODE FROM JUNE 1954 TESTED SUPER STRONG AND FAIRLY WELL BALANCED ??AVO VCM163 TESTED READINGS TUBE 2 - Ia 1.52/1.65 gm 1.6/1.7 100% = Ia 1.2 gm 1.6 ? PLEASE SEE MY OTHER AUCTIONS ?

CV492 (ECC83 12AX7) aerospace quality ex aircraft valve made by STC code KB/FD. Tested good for voltage gain = 500 (54dB) HT 200v Ra 220K Rk 1K Ia 0.5mA Heater/K > 20M ohms Auction is for 2 off valve More than two available

VERY RARE STRONG PAIR OF MULLARD CV492 ECC83 12AX7 mC1 LONG PLATES SQUARE GETTER BOTH HAVE THE SAME mC1 B5E DATE CODE FROM MAY 1955 BOTH TESTED SUPER STRONG ??AVO VCM163 TESTED READINGS TUBE 1 - Ia 1.8/1.57 gm 1.9/1.9 TUBE 2 - Ia 2.1/1.75 gm 2.0/2.0 100% = Ia 1.2 gm 1.6 ? PLEASE SEE MY OTHER AUCTIONS ?

CV492 (ECC83 12AX7) aerospace quality ex aircraft valve made by Brimar code KB/AD. Tested good for voltage gain = 500 (54dB) HT 200v Ra 220K Rk 1K Ia 0.5mA Heater/K > 20M ohms Auction is for 1 off valve More than one available

CV492 (ECC83 12AX7) aerospace quality ex aircraft valve made by Mullard code KB/DA. Tested good for voltage gain = 500 (54dB) HT 200v Ra 220K Rk 1K Ia 0.5mA Heater/K > 20M ohms Auction is for 1 off valve More than one available

CV492 (ECC83 12AX7) aerospace quality ex aircraft valve made by STC code KB/FD. Tested good for voltage gain = 500 (54dB) HT 200v Ra 220K Rk 1K Ia 0.5mA Heater/K > 20M ohms Auction is for 1 off valve More than one available

2x Mullard ECC83 Valves Date Code: I61 B2H2, I61 B2H2 Tested by AVO VCM Tester Valve 1 Ia1 = 0.85(mA), gm1 = 1.3(mA/V) Ia2 = 1.05(mA), gm2 = 1.4(mA/V) Valve 2 Ia1 = 1.02(mA), gm1 = 1.45(mA/V) Ia2 = 0.8(mA), gm2 = 1.3(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20230522L017

2x Mullard 12AX7S/CV4004 Valves This pair of 12AX7S/CV4004 are with very unique box-anode construction. They are believed manufactured by Mullard Mitcham factory Tested by AVO VCM Tester Valve 1 Ia1 = 0.7(mA), gm1 = 1.25(mA/V) Ia2 = 0.8(mA), gm2 = 1.3(mA/V) Valve 2 Ia1 = 0.78(mA), gm1 = 1.3(mA/V) Ia2 = 0.8(mA), gm2 = 1.35(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20230522L004

2x Mullard ECC83 Valves Very rare pair of Mullard ECC83 manufactured in 1955 with long-plate and []-getter Date Code: mC1 B5F, mC1 B5F Tested by AVO VCM Tester Valve 1 Ia1 = 1.32(mA), gm1 = 1.55(mA/V) Ia2 = 1.45(mA), gm2 = 1.4(mA/V) Valve 2 Ia1 = 1.23(mA), gm1 = 1.5(mA/V) Ia2 = 1.48(mA), gm2 = 1.45(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20230522L001

2x Siemens ECC83 Valves Date Code: ?W mCP, *** ** Branded Mazda and Mullard but manufactured by Siemens Halske. Tested by AVO VCM Tester Valve 1 Ia1 = 0.95(mA), gm1 = 1.35(mA/V) Ia2 = 1(mA), gm2 = 1.4(mA/V) Valve 2 Ia1 = 0.95(mA), gm1 = 1.35(mA/V) Ia2 = 1.03(mA), gm2 = 1.4(mA/V) NOS specification: Ia = 1.2(mA), gm = 1.6(mA/V) *** This valve has also been tested in amplifier without any noise. *** Postage Costs I am happy to post this item to worldwide and combine postage cost on multiple purchases. 20220412L023