Oh boy, this is where I get to "jump into the fray" screaming "Odin has you all!"
You know Methos from the Highlander TV series, the oldest immortal of them all, so old that nobody even KNEW how old he was, not even him?
That is like my receiver. I got it in 1998 from a retired neighbor who was selling a bunch of her house's stuff before moving to a nursing home. It's from the now-defunct MCS (Modular Component Systems) line by JC Penny. Its top and sides have a false wood grain. On its silver front panel, which has some kind of fine-grain texturing as if it had been brushed left-to-right while heated to softness, there are a power button, 7 knobs with gear-like teeth and grooves all around their circumferences, and 6 half-inch-long switches. Next to the knob-controlled analog radio tuner display with the little vertical needle that physically slides across in front of it, there are two other little gages, also analog, whose needles swing as you tune and are supposed to line up vertically in the middle when you've got it tuned as well as it can be. Instead of any kind of bass booster/enhancer, this this has a "low filter". Other on/off toggle functions controlled by these switches include a "scratch filter", a "muting" (which doesn't seem to do anything), a "loudness", and something called a "tape monitor", which I guess means that back then tape recording had to be done with separate source and target machines hooked up through something like this for some reason beyond me.(?) There are also separate inputs and outputs on the back of this thing for the tape monitor/recorder process, which I don't know how to use.
Speaking of its inputs and outputs... along with its stereo RCA jacks there is another kind of jack, consisting of a little screwbolt with walls on each side of it. The wires it came with had weird little split claw-like tips that slide into these slots and around the screwbolts, which you would then tighten to hold the wires in place. When I had to replace the speaker wires, this forced me to bend the exposed wire tips back into J-hooks to get them around the screwbolts.
Obviously, it predates remote controls of any and all kinds. But it appears not to entirely predate surround sound. One of the knobs sets it to use either the quarter-inch headphone jack, or speakers A (front), or speakers B (rear), or A and B, or something called "matrix". Since it's separate from the setting that would just use A and B at the same time (presumably in plain stereo) and there are only two sets of speaker wire jacks, I'd guess "matrix" must refer to some kind of 4.0 surround sound scheme I've never heard of anywhere else. (I haven't tried it yet, though.)
Is there any value in electronic antiques?