HP / Hewlett-Packard 6823A Power Supply Amplifier - with a few scratches / scuffs / marks etc but generally in very good condition considering it’s age. These are rare units that don’t come up for sale very often. It powers up fine and I’ve quickly tested / loaded it as shown in the last three pictures (in power supply mode and the last in amplifier mode feeding it a 100Hz sine wave) fluke / dummy load not included. The switches are pretty stiff and the dual concentric pot is a bit ‘rough’ feeling but does move freely and the output in either mode ‘ramps’ up and down without any drop outs / jumps etc. In power supply mode with the pot fully rotated in either direction it doesn’t output the same voltage (positive compared to negative) - not sure if that’s normal or if it needs adjustment (hence selling ‘for parts / not working’) apart from that it seems to work fine. 

Any questions please ask. Open to a sensible offer. No returns accepted, no warranty, no moaning afterwards. 

Delivery quoted is for UK mainland only, we don't sent to Ireland. 

We send all our items very well packaged (please see our feedback) via UPS & add a tracking number to your order once booked. Please see my other items for more test kit & related items!