This is used with light wear and is in great condition. It has no bottom cover or top cover/cage. I believe this normally uses a 5U4GB rectifier, four EL84 output tubes, and two 12AU7 tubes. The tubes are not included. The rectifier is included. This has a few new caps underneath, but may need more work, though it will honestly probably work fine like this.

USED vintage zenith stereo tube amplifier model 7D31 (FOR PARTS OR REPAIR). The item “USED vintage zenith stereo tube amplifier model 7D31 (FOR PARTS OR REPAIR)” is in sale since Wednesday, November 10, 2021. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “ronandker” and is located in Guilford, Connecticut. This item can’t be shipped, the buyer must pick up the item.

• Brand: Zenith
• Type: Tube Amplifier
• Model: zenith 7D31

USED Zenith vintage Stereo tube amplifier model 7D31, FOR PART or FOR REPAIR. IT IS VERY CLEAN AND BEAUTIFUL, INCLUDING TUBES; ONE 5U4, TWO 12AU7, AND FOUR 6BQ5. WHAT YOU SEE IN THE PICTURE IS WHAT YOU GET. The item “USED Zenith vintage Stereo tube amplifier model 7D31, FOR PART or FOR REPAIR” is in sale since Saturday, October 2, 2021. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “qian_7155″ and is located in Brooklyn, New York. This item can be shipped to United States.

• Brand: Zenith
• Model: Zenith 7D31
• Type: Tube Amplifier

USED vintage Zenith stereo tube amplifier model 7D31, clean and beautiful. It is working, very clean, and beautiful. It includes 7 tubes; one 5U4, four 6BQ5 (6n14n), and two 12AU7. WHAT YOU SEE IN THE PICTURES IS WHAT YOU GET. The item “USED vintage Zenith stereo tube amplifier model 7D31, clean and beautiful” is in sale since Thursday, March 5, 2020. This item is in the category “Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps”. The seller is “qian_7155″ and is located in Brooklyn, New York. This item can be shipped to United States.

• Brand: Zenith
• Type: Tube Amplifier