Welcome to ELC Audio Engineering and my eBay store. Please read the description carefully before bidding or asking questions. I am not a surplus dealer, nor do I operate a calibration (metrology) service. I am a semi-retired physicist/hearing scientist/EE and author. Nearly all items come from my personal lab and collection of miscellany (meaning I generally have in-depth knowledge of the items being sold). Shipping: eBay does NOT automatically adjust for the shipping cost of combined items. If you purchase multiple items that can be combined into a single shipment, please ask for an invoice so that I can deduct from the shipping (and save you money!). I charge for actual shipping only (i.e. no added fees) using eBays shipping calculator. International bidders must use eBays International shipping service. Please read [1] for additional shipping info. I do not use stock photos or canned descriptions. What you see in my photos is exactly what youre bidding on. I do not borrow photos from other sellers, nor do I use eBays database. Other sellers have used my photos (noting I have zero affiliation with those sellers), and why I have added the tungsten (atomic symbol W) coffee mug for personal identification. If sellers arent using their own photos, then you really dont know what youre buying or bidding on. Photos are an integral part of my descriptions: Please view all photos carefully. If something isnt clear, please ask questions before you bid. Pictures may include test equipment, cables, connectors, and auxiliary equipment that are not a part of the auction. Please read the description carefully so you know exactly what you are bidding on. With very few exceptions, I do not accept returns. Read [2] for further details regarding this policy. Nothing in this listing is misleading--check my feedback as a seller [3]. Many thanks for keeping eBay a positive buying and selling experience. This listing is for a matched PAIR of cherry picked Sonion Electrostatic tweeters for high-end In-Ear Monitor (IEM) earbuds. (Side: Sonion and Knowles are the two big names in high-end balanced armature drivers for IEMs.) These engineering samples have never been used and are packaged (unopened) exactly as when received from Sonion (Netherlands). I tested identical samples using a GRAS high-frequency / high-resolution ear simulator and via other acoustical test fixtures, and these balanced armature (not quite the BA operating principal) tweeters are impressive. The pair I tested were closely matched... all the way out to 48kHz (!). (Side: Im listing a GRAS RA0402 high-frequency 711 ear simulator separately.) Back to this auction... Again, this auction is for the pair of Sonion electrostatic tweeters and their matching step-up transformers (that also fit in the IEM casing), as shown in the photos. Please view all photos carefully, as theyre better descriptors than my writing. Reminder: International buyers must choose eBays International Shipping Service. Thank you for viewing! [1] I pack items with great care--the same way Id like to receive a delicate or valuable item. Like other sellers, I do not have control over shipping costs or carrier delivery time. Small- and medium-sized items will be shipped via USPS Priority Mail. Larger parcels will be shipped via FedEx Home or FedEx Ground. Unlike Jeff B, neither eBay nor I operate our own shipping services--this means no free, prime, or overnight shipping (although I ship some items for free depending on size). [2] Why I no longer accept returns: In a few unfortunate incidences, bidders with buyers remorse had intentionally damaged perfectly good equipment in order to receive a refund. In other instances, buyers were simply incompetent: Equipment was damaged because these buyers did not know how to properly use or handle it; yet, they wanted refunds because of the damage they had caused. Bottom line: No returns! If the wrong item is shipped or if their is a gross oversight on my part (I have yet to do either of these), I will promptly refund or exchange the item and pay for return shipping. Please understand what youre buying is USED unless its clearly stated as new. [3] Im batting 100% positive feedback after nearly two decades of buying and selling on eBay*. I kindly leave positive feedback for those who do the same. Prior to my current username, I had over 1500 combined selling and buying reviews with 100% positive feedback. *(I changed my username since starting on eBay in order to reflect my current business.) Regarding sensitive electronic equipment: I encourage all viewers to compare my listings to other sellers listings and photos: If a printed circuit board is placed on anything other than an ESD mat, then the seller doesnt know how to exercise appropriate ESD precautions. Many electronic components are easily compromised or destroyed due to improper handling. I use appropriate ESD protection measures when handling static-sensitive equipment. Items that are ESD sensitive will be shipped in anti-static wrapping. I do not entertain best offers, nor do I end auctions early. Item will be sold to the high bidder (heck, a single bidder might get a fantastic deal). Items not paid for after 72 hours will be re-listed.

Pair high quality extraordinary vintage Sony SA-H7900 active compact speakers with integrated power amplifiers, electrostatic tweeter for transparent and silky highs and 17cm Motional Feedback Woofer System for extraordinary reproduction of basses even in bigger rooms. Hochwertiges außergewöhnliches vintage Sony SA-H7900 kompaktes aktives Lautsprechersystem mit integriertem Leistungsverstärker, elektrostatischem Hochtöner für einen transparenten und seidigen Hochtonbereich und ein 17cm Motional Feedbak Bass System für eine hervorragende Bassreproduktion sogar in größeren Räumen. The speakers have an excellent sound, very clear and dynamic with a very good room image freely placed on stable stands. I last operated the speakers with my Philips preamp in my other auction.Die Lautsprecher haben einen hervorragenden Sound, klingen sehr klar und dynamisch und haben auf soliden Ständern platziert eine sehr gute Raumdarstellung. Ich habe die Lautsprecher zuletzt mit dem in anderer Auktion angebotenen Philips-Vorverstärker betrieben. Heutzutage wäre so eine technische Besonderheit vermutlich sehr teuer zu bezahlen. Nowadays, such technical features would be probably very expensive to pay. 50 W sinus / unverzerrt - mit eingebauten Endstufen - with integrated power ampsSize/Abmessungen 22 x 50 x 31,5 cm - Gewicht ca. 9,5 kg / StückVintage ca. 1990 - 1995 - very rare - sehr seltenHergestellt - manufactured in Japan Good condition with slight signs of age-appropriate use. Technically perfekt and clean. No original packaging and documents available. Covers of the woofer are both supplied.Guter Zustand mit leichten altersbedingten Gebrauchsspuren. Technisch einwandfrei und sauber. Keine OVP und Unterlagen vorhanden. Lautsprecherabdeckungen werden beide mitgeliefert. The stands shown are very heavy with Atabite metall granuelesand cannot be sent as parcel. However, these can be purcased separately upon collection.Die abgebildeten Ständer sind sehr schwer, mit Atabites Metallgranulat gefüllt können nicht verschickt werden. Diese können jedoch bei Abholung separat erworben werden.

( please read as I think I have covered everything) Inquiry for serious committed buyers only to avoid meaningless interviews to respect our time. For sound questions, you could go to forums or come to my place for paid demo so let us not waste on time on interviews of how it sound. Bought for more than one year and half, the last batch of black chrome limited version. No aesthetic or functional blemish. Kerry has the reputation of the best build of T2, surpassing Kevin Gilmore and George P in heating dissipation as well as PSU implementations. Listing price is only for the amp in the picture, if you buy the amp in bundle with X9000, I could give you special discount of adding another 3900USD as a bundle discount. I could also sell the original Omega in the picture for 7.8K as a bundle discount. Local pickup will be gifted with a 2k USD discontinued Adona Reference audio rack which sounds perfect with this amp, as a compensation of missing box. Welcome to my demo room to demo and quality check. ( Demoing for fun is also welcome with demo fees) For shipping, I can’t shoulder the price to ship that super heavy marble stand. Plus the shipping will be a lot and I’m concerned about shipping due to how careless these shipping companies are. I would buy brand new boxes from Eksonic to ship it to you. Selling as I am considering to leave this country for good and thus I might be selling all my gears that are 120w only.

*LOCAL PICKUP ONLY* PLEASE DO NOT MESSAGE ME AND ASK IF I CAN SHIP THEM TO YOU, THE ANSWER IS NO* *If you know a way to have the speakers picked up from my home, boxed up, and shipped to you, all at your own expense, then I’d be open to that but I have no idea if that’s even possible…. If it is somehow possible, then I’d imagine it would be at a pretty high cost. Stacked quad esl 57 electrostatic speakers on Mark Levinson style stands. Close serial numbers they have never been abused. Always used dynaco st 35 amplifier. Have some updates. Sound great but I’m selling them because I don’t have much room for them anymore. You won’t be disappointed.

*LOCAL PICKUP ONLY* PLEASE DO NOT MESSAGE ME AND ASK IF I CAN SHIP THEM TO YOU, THE ANSWER IS NO* *If you know a way to have the speakers picked up from my home, boxed up, and shipped to you, all at your own expense, then I’d be open to that but I have no idea if that’s even possible…. If it is somehow possible, then I’d imagine it would be at a pretty high cost. Stacked quad esl 57 electrostatic speakers on Mark Levinson style stands. Close serial numbers they have never been abused. Always used dynaco st 35 amplifier. Have some updates. Sound great but I’m selling them because I don’t have much room for them anymore. You won’t be disappointed.

Ich biete hier meinen Kinera Nanna 2.0 Pro zum Verkauf an. Er ist technisch wie optisch in einem hervorragenden Zustand. Gekauft beim Fachhändler am 09.06.22. Somit besteht noch Garantie. Der IEM kommt mit OVP und sämtlichem Originalzubehör. Und auch diesmal gilt, wer sich im Hobby bewegt hat von dem IEM schon mal das ein oder andere Mal gehört. Bei weiteren Fragen, einfach melden! Und noch das Übliche: Privatverkauf, ich schließe jegliche Haftung für Sachmängel aus. Keine Rücknahme. Verkauf und Versand nur innerhalb Deutschlands mit ausreichender Versicherung.

Trattasi di coppia di diffusori Hi-Fi Sony SA-EX200 e amplificatore Sony TA-EX90 funzionanti e in buone/discrete condizioni con normali segni duso, la particolarità delle casse è nellimpiego di tweeter elettrostatici. Non esitate a chiedere ulteriori informazioni o altre fotografie su mail.

***MARTIN LOGAN - CLARITYSPEAKERS ELECTROSTATIC HYBRID SPEAKERS IN GREAT WORKING AND COSMETIC CONDITION WITH VERY MINOR SIGNS OF USAGE*** **I am including the Sony Subwoofer for FREE with these ML Clarity Speakers as shown in the pictures** These speaker are great for listening to all types of music, and when set for up with your TV and the Sony subwoofer it certainly enhances the overall sound quality experience. Included with low volt power supply units. ****Local Pickup Only - Will deliver free if requested within a 25 Mile radius****

Very rare unusual speakers. Servo controlled bass drivers Electrostatic tweeters Good Condition and great sound well controlled bass and sparkling highs The stands NOT included

***MARTIN LOGAN - CLARITYSPEAKERS ELECTROSTATIC HYBRID SPEAKERS IN GREAT WORKING AND COSMETIC CONDITION WITH VERY MINOR SIGNS OF USAGE*** **I am including the Sony Subwoofer for FREE with these ML Clarity Speakers as shown in the pictures** These speaker are great for listening to all types of music, and when set for up with your TV and the Sony subwoofer it certainly enhances the overall sound quality experience. Included with low volt power supply units. ****Local Pickup Only - Will deliver free if requested within a 25 Mile radius****

Very rare unusual speakers. Servo controlled bass drivers Electrostatic tweeters Good Condition and great sound well controlled bass and sparkling highs The stands are included if collected only

Trattasi di coppia di diffusori Hi-Fi Sony SA-EX200 e amplificatore Sony TA-EX90 funzionanti e in buone/discrete condizioni con normali segni duso, la particolarità delle casse è nellimpiego di tweeter elettrostatici. Non esitate a chiedere ulteriori informazioni o altre fotografie su mail.

***MARTIN LOGAN - CLARITYSPEAKERS ELECTROSTATIC HYBRID SPEAKERS IN GREAT WORKING AND COSMETIC CONDITION WITH VERY MINOR SIGNS OF USAGE*** **I am including the Sony Subwoofer for FREE with these ML Clarity Speakers as shown in the pictures** These speaker are great for listening to all types of music, and when set for up with your TV and the Sony subwoofer it certainly enhances the overall sound quality experience. Included with these ML Clarity Speakers are the original Martin Logan low volt power supply units. ****Local Pickup Only - Will deliver free if requested within a 25 Mile radius****

***MARTIN LOGAN - CLARITYSPEAKERS ELECTROSTATIC HYBRID SPEAKERS IN GREAT WORKING AND COSMETIC CONDITION*** **I am including the Sony Subwoofer for FREE with these ML Clarity Speakers as shown in the pictures** These speaker are great for listening to all types of music, and when set for up with your TV and the Sony subwoofer it certainly enhances the overall sound quality experience. Included with these ML Clarity Speakers are the original Martin Logan low volt power supply units. ****Local Pickup Only - Will deliver free if requested within a 25 Mile radius****