what's biggest bang/buck tweaking old-old Yamaha CDP?

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leadbelly

leadbelly

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Joined 2002
I've got an old Yamaha CDP, a CDX-410U. It pre-dates special purpose CDP IC's, I think.

It's got a B-B PCM56P DAC chip, preamp stage is made out of transistors and not an op-amp chip, 2200 uF caps on PS.

So what mod is biggest bang/buck here? No op amp chip to swap. Is there a DAC swap for the PCM56P? Clean up the PS? Clock upgrade?

Thanks in advance.
 
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