National Union JAN 6SL7GT

National Union JAN CNU 6SL7GT Black Glass 1952
Military spec tube, made in early 1950's. This tube has a plenty of audiophile followers ranking it one of the top-five. A great sounding tube with rich presence. Matched pairs available.

Quantity in Stock : 34 pcs
Price : Grade A @ US$39,00/ea ; US$83,00/matched pair
          Grade B @ US$34,00/ea ; US$73,00/matched pair

          Grade C @ US$16,00/ea ; US$37,00/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.

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