Sylvania 6SL7GT / VT-229

Sylvania JAN CHS 6SL7GT / VT-229
Military spec tubes made in the 1940's. Very rare find. These tubes have long bottles with black bases, black plates and bottom-getters. One of the top-five 6SL7s. Sounds similar to later production Sylvania with its large soundstage. Some tubes are labeled and boxed for Heintz and Kaufman. Matched pairs available.
Quantity in Stock : Singles only!
Price : Grade A @ US$39.00/each ; US$83,00/matched pair
          Grade B @ US$34,00/each ; US$73,00/matched pair
          Grade C @ US$24,00/each ; US$53,00/matched pair

Grade A -The best in the stock. Lowest noise and microphony with the tightest balanced sections we have available. This is typically 10% or often tighter given the large volumes of our stock.

Grade B -Low noise and microphonics with a section balance typically between 15% and 20%, but may be higher depending on available stock.

Grade C -Lowest noise but slightly microphonic. Section balance will be similar to Grade A or B.This grade is only suitable for use in the driver stage of an amplifier, or the output/buffer stage of a DAC or CD Player.



  1. Thanks Koray
    Quick and easy ordering and product as described!
    Sweet tubes and will order again from you without hesitation. Thanks.

    Francisco/ Brisbane/ Australia

  2. One of the best sounding tubes to my ears! Cheaper and safer than eBay.


  3. I own a pair of those, and they are so gread and convincing !
    Buy yourselves a pair...


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