Up for sale here is this neat vintage Zenith 7B31 stereo tube amplifier, from 1958 and Made in USA. 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. This has a few new caps underneath, but may need more work, though it will honestly probably work fine like this. Please see my pictures for details. If you have any questions, please ask. I have more amplifiers and other vintage electronics listed–feel free to take a look!