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You can buy that 80's gear for pennies on the dollar but: slides will get noisy due to dust ingestion, even if you're very careful.

I've got a big Tascam here that is from the 90's (32 channel) and it absolutely rocks but it's also physically large enough that you won't be taking it anywhere. But you never have enough channels ;)

slides will get noisy due to dust ingestion, even if you're very careful.

I thought that phenomenon was primarily due to oxidation.

Hmm, maybe get a used 80s mixer and use the hardware as UX for a digital mixer (with some algorithmic smoothing of the inputs)...

The LM3914 is (was?) a frequently used part for voltage-to-LED bars conversion: https://www.ti.com/product/LM3914#features

I think the Tascam Portastudio 244 would have fit the bill, but with the tape deck taking extra space.