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RCA 5751 / 12AX7 - black plates, halo getter

RCA 5751 / 12AX7 - black plates, halo getter
Price: $54.00
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Item Number: 784
Manufacturer: RCA
This 1960s RCA 5751 tube is a lower gain 12AX7 equivalent. It has black plates and a halo getter. The red print on the glass has the RCA logo (may be partial/missing). 
 
Tube tests as new with balanced sections and very low noise. It ships in a new white box with test results for current draw (mA) and transconductance (Gm).
 
This tube is sold individually. Matched pairs, when available, are listed as Item 843. Photo is a sample from the lot.

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RCA JRC 5751 / 12AX7 - black plates, halo getter
RCA JRC 5751 / 12AX7 - black plates, halo getter
Price: $59.00
RCA JRC 5751 / 12AX7 - black plates, halo getter
This 1960s RCA 5751 tube is a military spec, lower gain 12AX7 equivalent. It has black plates, thick micas, and a halo getter with copper support post. The red print on the glass reads "JRC-5751" (partial). Tube tests as new with balanced sections.
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TC Tubes specializes in precision testing and matching of vintage and new production vacuum tubes for guitar & bass players, audiophiles, and DIY tube audio enthusiasts. Our website features secure payment options and fast, convenient shipping around the world.

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