ECC83S is 12AX7 high gain pre-amplifying DOUBLE TRIODE. Thanks to its design it also peforms with very low noise and microphonics. Harmonically rich, with a detailed low end and a warm high end.
ECC83S
Data sheet
Socket
B9A - Noval (9 pins)
Heating parameters
6.3V / 12.6V according to series or parallel assembly