From a recent estate sale, this is a vintage GE General Elctric Model mS-4000 Tube Amp. It seems to work, all but 1 tube lit up.
Could use a good cleaning of the pots, etc. Condition is For parts or not working. The item "Vtg GE General Electric Stereo Classic Model MS-4000 Tube Amp Works Asis TLC" is in sale since Saturday, October 24, 2020. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps".
The seller is "beantowntreasures" and is located in Bellingham, Massachusetts. This item can be shipped worldwide.