ECC83-MG is 12AX7 with Mid-gain, which means fuller and richer mids achieved by medium long plate. It provides a milder sound than the regular ECC83. Very low noise and microphonics. Gold pins.
ECC83-MG-GOLD / 12AX7-MG-GOLD
Data sheet
Socket
B9A - Noval (9 pins)
Heating parameters
6.3V / 12.6V according to series or parallel assembly