This Bose 4401 Four Channel Preamp has been Serviced, Re-Capped, & 100% Tested by former Bose Engineering Technician. I provide a 30 Day warranty which is virtually unheard of for a 50 year old piece of Audio Gear.  Has Inputs for Phono (2) , Tape (2) , Auxiliary, and Tuner.  Front Stereo Left & Right, and Rear Stereo Left & Right.  Unit is setup for Quadraphonic operation, however the Optional Quad Decoder boards are not present.

• All electrolytic capacitors were replaced.

• All Controls, Switches, and Connectors were cleaned, lubricated, and treated with Deoxit.

• All functions and signal paths from inputs to outputs were tested.

• Any internal circuit adjustments were made and tested if needed.

• Unit was thoroughly cleaned inside and out. Note because of its age there are scratches and blemishes present on the top rear and side panels. The front panel is actually in very good condition, but it is 50 years old and shows some wear (see photos).

Warranty: No Returns because of age, but I will warranty for functionality only for 30 days. If unit fails to work after 30 days, you can return at my cost, and we will repair. For obvious reasons, there are no returns or warranty for cosmetics.

Shipping: Unit will be packed and shipped professionally. I have extensive experience shipping electronics, so they arrive undamaged and intact. Of course, insurance will be included just in case.