LM317T Voltage Regulator with Pass Transistor

A jam session was cancelled today so I decided to hit some more great tones on camera. Sorry for the digital camera sound. For this clip, I plugged the amp's power cord into a $40 variac (a voltage regulator, inexpensive and great!) (set on 90 volts). I totally recommend doing this!! It takes harshness away and gives tonal bliss (lower-voltage amp). No effects were used.



http://www.youtube.com/watch?v=ZOqNGDaTIqo&hl=en