JohnBlue Audio TL66 Tube Mono Amplifiers w/NOS National Union 350B Tubes!

JohnBlue TL66 class A single ended tetrode tube monos for sale and yes its not a typo.They are NOS National Union 350b power tubes! These tubes are very very special.They are the holy grail of 6L6 and near impossible to get especially testing as new.I know what these tube were selling for not even testing strong.Tubestore wanted 800.00 usd each.If you google you will still see them.The amps are in great shape and complete with original packaging which is two small boxes inside a larger one.I always am very conservative with my grades.These sound amazing with these tubes.Be a lucky owner.The amps are two years old.They were rotated from original owner who had three amps so really not much use at all.The tubes were stored for 10 years and I have provided pics of the test.The tubes will brings years of musical bliss.

Info

TL66 Mono Vacuum Tube Amplifier is JohnBlue Audio's latest product line up for 2008.
The amplifier is point to point wired without the use of any PCB.The output transformer is hand wound by Mr Lee inventor of the famed "LITZ" winding technique. Unlike currently mass produced equipment on the market that is predominantly Made in China, all of TL66 Mono Vacuum amplifier's internal parts employ an eclectic mix of audiophile grade German, American and Japanese parts that offers unsurpassed sonic experience and are hand made in Taiwan.
Compared to equipment that comes supplied with standard current production Chinese or Russian tubes, our amplifier uses NOS OTK 6L6 (circa 1980s) for its power stage and NOS Sylvania 6AU6 driver tubes for the pre stage, the TL66 Mono Block Vacuum Tube Amplifier brings within reach audiophile sound quality in a complete single unit. The TL66 Mono Vacuum Tube Amplifier is able to accept KT88 and/or 6550 tubes, maximising flexibility for enthusiasts to roll tubes in the quest for audio nirvana.
Internal components consist of: NOS "FRAKO" capacitors originally made in East Germany. The horizontal Champagne and Gold Coloured audiophile Frako and Roe caps are often seen utilised in Studer CDP. Frako and ROE capacitors are sonically alike, though Frako is less bright than ROE caps. Frako is renowned for its midbass punch and subtle airiness. Main Coupling caps are of the proprietary JohnBlue brand "Mr Cable" ( aqua blue cap) Volume pot is Japanese BlueShelled Alps.
AC Power filter caps are Audiophile grade Hitachi (Basic) or BHC / Rifa supply for special order.
Other parts: Carbon and Allan Bradley resistors, Pure Virgin and OCC copper wires for internal point to point wiring, Wonder Solder for all contact and lead points.
Tubes used are NOS OTK 6L6 and US made 6AU6 and 6L6 tubes are DIRECTLY interchangeable with:KT88,EL34,6L6,KT77,6550

Review:
6moons Review

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TECHNICAL SPECIFICATIONS:
COLOR: BLACK
MAX OUTPUT POWER: 6W X 2
FREQUENCY RESPONSE: 20-20KHz ( ±1.5dB)
OUTPUT IMPEDANCE: 8 Ω
POWER SUPPLY: AC100~120V/50~60Hz / AC220~240V/50~60Hz
SIZE: L260 xW145 xH130
WEIGHT: 13 kg
THE TUBE USED: OTK 6L6 x 2,Sylvania 6AU6x2

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