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RCA 5814 and 6189 Black Plates


RCA JRC 5814A/WA and 6189 Black Plates
The military spec tube 5814 was developed by RCA around 1950 as a lower distortion, noise and microphonics 12AU7. Some tubes are labeled and boxed for Heintz and Kaufman. We have the 6189 type, another military and premium industrial standard as well. Both of them physically same tubes with black plates, o-getter and support rods. The 6189s in stock are branded for General Electric. These early 1960's production tubes have smooth, balanced sound with good bass. Matched pairs available.

Quantity in Stock : 30 pcs
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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