Featured Does anybody know this AMP system?

[アニメMrDanquer]

Recently I discovered my father has this AMA 550 system

The middle one is the power supply, it has a 12V input, and a REM, but I can't find a GRD anywhere, and it has 5 33V outputs for AMPS

And the other ones are all monoblock power amps.

There is also a fuse box in the right side of the power supply, with a blade to 40A.

These are very old, my father doesn't know any specs, and there is no specs on the chasis, there is no box or user manual, I tried using ChatGPT, got lots of info, but none of it is 100% sure, he told me that each amp is probably capable of 100W RMS, but IDK at what resistance, and that the power supply can probably do about 450W total.

Does anybody know anything about these?

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[mahc 10+ year member]

Looks like Marantz to me. I've never seen these. Collectables for sure.

 

[Deiimos]

Only other thread I see on these amps, is over at DIYMA from 2013, someone has a photo of basic specs from the AMA catalog for the 550 System. I've never seen nor heard of them, they look like a pretty old system though.

 

[Doxquzme Premium Member]

Audio Mobile Acoustic. Any fuses visible?

 

[アニメMrDanquer]

Audio Mobile Acoustic. Any fuses visible?

Ahhh, I'm to dummy on this to know about a fuse inside the power suply or amps, the only fuse I kwon about is the fuse on the fuse box I said before, it's a 40A fuse.