Sonotone 12AX7 - clear top, phono grade
1 in stock
Item Number: 1035
1968 Sonotone 12AX7 / ECC83 tube has gray plates, a side D getter, and a
clear top. The yellow print on the glass has the Webcor logo.
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
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.
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.
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.