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RCA 12AT7WA Black Plates

RCA JAN JRC 12AT7WA Black Plates
Military spec. tubes from 1960's with "12AX7/12AU7" type small black ribbed plates and o-getter. These have extra support posts on sides. This tube is very low in microphonics and noise due to its rugged construction. A guitar player favorite! Matched pairs and quartets available.

Quantity in Stock : 55 pcs
Price : Price : Grade A @ US$32,00/ea ; US$65,00/matched pair
                     Grade B @ US$26,00/ea ; US$54,00/matched pair
 
                     Grade C @ US$14,00/ea ; US$30,00/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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