$230.0 Buy It Now or Best Offer
free,30-Day Returns

Seller Store lerxstfan12
(1452) 100.0%,

Location: Willow Grove, Pennsylvania
Ships to: US,
Item: 226370213262

All returns accepted:ReturnsNotAccepted
Amperex:Amperex
Type:Vacuum Tube
12AX7 ECC83 E83CC 7025 B339 CV492 ECC803s 6681:12AX7 ECC83 E83CC 7025 B339 CV492 ECC803s 6681

Up for grabs is an ultra rare NOS pair of the Amperex Electronics for Medicine 12AX7 / ECC83 Tubes. 14mm plates with the O-ring getter combination. Same exact tubes as the famous Bugle Boy tubes but a huge upgrade in quality with these being SELECTED Medical Grade tubes. Widely considered one of the best 12AX7/ECC83 tubes ever made and highly sought after. Known for being one of the lowest noise phono grade 12ax7/ecc83 ever made they are typically dead quiet in circuit. Extremely strong MATCHED pair with Platinum BALANCED triodes. Made in the Herleen Holland factory. One of the best sets of Matched NOS 12ax7/ECC83 tubes you’ll ever find to buy and easily one of the best sounding tubes for guitar and HiFi amps. High NOS testing. You can be assured you are buying a pair of the best testing and proven Amperex 12AX7/ECC83 tubes you’ll find. These EFM tubes were cherry picked out of large batches of tubes to be the best of the best for medical grading and for the critical uses they were typically employed in. Therefore you can be assured these are the very finest quality tubes Amperex was capable of producing. Date MATCHED tube codes are ◿9H3 as shown in photo. Testing on this particular set of tubes is incredible as shown in the testing pictures. Fully tested for Gm Ip shorts and gas. Dependable high quality Divo and Triplett 3444 testing with results under test shown in photos. Ships in new Amperex boxes as pictured. Don’t miss these!! Best of the best…Good as it gets in a NOS vintage 12ax7/ecc83 tube. SEE MY OTHER LISTINGS FOR MORE GREAT TUBES AVAILABLE!! PLEASE MESSAGE ME WITH ANY SPECIFIC TUBE NEEDS AND REQUESTS Tubes undergo dual testing procedures whenever possible. Analog tested on fully calibrated and modernized Hickok 539c, AVO 163 or Triplett 3444-A testers. Then digitally tested and displayed on the Divo/Orange tester for its ease of interpretation by buyers. As a result, you are assured to be getting some of the finest quality, fully tested and proven vintage tubes available for sale. **************************************************************** Triplett 3444-A Results : Tube 1 T1= 1910 gm / 1.6 la T2= 1950 gm / 1.7 la Tube 2 T1= 1970 gm / 1.6 la T2= 1950 gm / 1.5 la Triplett 3444-A Minimum = 1000 gm NOS Spec = 1600 gm / 1.2 la *********************************************** Tubes have undergone and passed all the following testing Heater filament test: Short circuit Heater filament test: Open circuit Heater filament test: Tolerance check Heater cathode insulation: Leakage Heater cathode insulation: Short Circuit Tests for heater current abnormalities Amplification factor Voltage gain Power gain Screen grid test Mutual conductance test Dual test for double triodes Emission Inter electrode leakage Inter electrode short circuit Flash-over (arc detection, high voltage breakdown) Gas ionisation test *** SALE TERMS – PLEASE READ COMPLETELY *** All my tubes are listed in the “parts OR not working” category. The reasons being in as much as tubes can be technically considered parts for amplifiers and such, the main reason is it’s the only way ebay honors a true no return listing as set by the seller. This has become the only way to prevent a very small number of unsavory buyers from intending to temporarily purchase high value vintage vacuum tubes as a means to be able to audition their sound in their equipment. Then in turn would be able to unfairly abuse the ebay buyer protections as a way of forcing a seller to accept a return/refund scenario up to several weeks after taking delivery. Obviously the aforementioned is not a situation myself and other sellers can endure, particularly when in regards to NOS tubes and their accompanying values. Your understanding for why that has to be done is greatly appreciated. I try to make every effort to give buyers reassurance and confidence in their perspective purchases by showing all my testing and proving the quality of the tubes offered for sale. Please ask any questions or concerns and I will respond promptly. USA SHIPPING ONLY. Please check my other listings for more rare and hard to find tubes that are also available. All items will be very well packed and shipped the next day whenever possible. Although I DO NOT ACCEPT RETURNS because of the sensitive nature and personal tastes associated with vacuum tubes, I will certainly work with any buyer to address any problem that may occur such as a tube that arrives damaged in shipping etc. I require any buyer that encounters a problem to notify me within 72 HOURS after receipt of a pending issue. If as a buyer, you feel you can not adhere to the sales terms of my listings, I kindly and respectfully ask that you do not purchase tubes from me. Unless specifically stated in the listing and commonplace amongst the majority of tube sellers, I do not warranty or make any guarantees related to noise, hum or microphonics. As is commonly known tube testing results do not translate between different brands of testers and the different approach each manufacturer used to achieve their test results. As a result all tubes listed for sale are represented and sold strictly off the results shown and provided by the testers used in the listings. All the testers used are some of the most respected models ever produced and are professionally calibrated yearly by the best techs in the business. Calibrations are checked regularly using bogie tube sets dedicated for each tester. All of which ensure solid and accurate results for the tubes tested and confidence for the buyer in the vintage tubes being purchased. Therefore please let it be understood that I will not guarantee or compare the results off any other testers nor will partial refunds be granted based off claims from unknown testers and their obviously unknown condition and accuracy. As a courtesy, every tube I sell is cleaned and treated with Deoxit to remove 50+ years of corrosion and grime. ***IMPORTANT NOTICE TO OVERSEAS BUYERS MUST READ!!!*** Please Be Aware….All my listings are sold strictly for shipping only in the USA. If you are an overseas buyer that registered the ebay global shipping program depot or other 3rd party shippers address as your formal address registered with ebay to be able to circumvent the USA only shipping policy, be aware that as the seller I WILL NOT be held responsible for any items rerouted overseas. You do so at your own choosing and OWN RISK!! I can only guarantee the packages safe arrival at the USA address listed on your ebay account. I WILL NOT BE RESPONSIBLE for any lost or damaged packages outside of the continental USA borders. For Best Results DEOXIT Your Sockets!! FEEDBACK: I will leave excellent feedback for the buyer once I receive their feedback indicating they have received their item in good condition and are satisfied with the transaction and their buying experience.

Frequently Asked Questions About Rare NOS Amperex 12AX7A ECC83 Electronics For Medicine Tubes MATCHED 7025 12AX7 in My Website

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