This amp has all original Drake transformers, with the original headshell. The electrolytic caps have been changed, but the circuit is original otherwise. There were some power section mods done to this amp at one time but have since been disabled - you will still see the remnants of this, with the switch on the back, along with the knob on the low input of channel 2. The amp has a replaced impedance selector, along with an aftermarket IEC port for the power cable.  Unavailable to ship - in-store pickup only.