Sylvania 12AX7 - long gray plates, various labels
1 in stock
Item Number: 211
1965 Sylvania 12AX7 has long gray plates with copper grid posts and a halo getter. The green print on the glass has the Shield logo.
This tube tests as new. 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. See product options for current availability.
Noise and microphonics
Tubes that test as "phono grade" are 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 its original box with test
results for current draw (mA) and transconductance (Gm). Photo is a
sample from the lot. Matched sets, when available, are listed as Item 456.
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.
May 21-31 will
ship June 2-3.