The California Tweed 2:20 is powered by 2x 6V6 Power Tubes while the preamp features 5x12AX7 and 1x12AT7 preamp tubes. ... Maintenance-free, Fixed Bias (20 and 10-Watt Modes) and Cathode Bias ...

A control to adjust cathode voltage of the 6V6 output stage was the only tweak to tune up the Sta Level. One of the underground mods for the Sta-Level was to remove that 12AT7 and couple the plates ...

Most of the work that [Ron] has done in the past with vacuum tubes and solid state electronics has been repair. At 59 years old, he finally put together his own stereo tube amplifier and we have to… ...

The Falcon 20 rocks dual 6V6 tubes and four 12AX7 preamp tubes with Multi-Watt technology for switching between 12, five or one watt output modes.

The Airwave is an all-new tube-powered combo amp with Two Notes ... They sit alongside a three-band EQ and a Master Volume that sets the level of the signal sent to the amp’s Class-A 6V6 ...