ORIGINAL Sear's Roebuck 1960's TUBE GUITAR AMP HEAD Amplifier 1485 Silvertone

  

This Amp head was slowly powered up using a Variac, Voltage was raised 10% every 10 minutes until Full voltage was achieved, While Monitoring the Current Draw! (Less than 1 Amp Quiescent). Technician Bench Test Amp (Not with Guitar).