Browse Categories

RCA 12AX7 - long black plates

RCA 12AX7 - long black plates
Price: $149.00
1 in stock
Item Number: 176
Manufacturer: RCA
Description

This 1955 RCA 12AX7 tube has long black plates and a slanted D getter. The white print on the glass has the RCA logo. These 1950s 12AX7 tubes are getting very hard to find—grab one while supplies last!
 
Testing

This tube tests as new with balanced sections. It has been screened for gas, heater-cathode leakage, shorts, and excessive noise and microphonics on each triode section. It was tested at typical operating voltages on a laboratory grade Amplitrex AT1000 (manual setting, fixed bias mode). Learn more about our testing process here.

Noise and microphonics

This tube tests as “phono grade”—
the quietest range for noise and microphonics—on our custom noise testing equipment. It is an excellent choice for sensitive applications such as microphone preamps, V1 position in guitar amps, DA converters, and phono stages.

Pricing

This tube is sold individually. It ships in a new white box with test results for current draw (mA) and transconductance (Gm) for each triode section.
Photo is of the actual tube.

Related Products

RCA 12AX7 / 12AX7A - gray plates, halo getter
RCA 12AX7A - short gray plates, phono grade
Price: From $22.00 to $79.00
RCA 12AX7A - short gray plates, phono grade
This RCA 12AX7A tube has gray plates and a halo getter. The red print on the glass has the RCA logo (partial / missing). Grab these popular tubes while supplies last! Click "more info" for current availability.
Search
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.

Shopping Cart
Your cart is empty.