Project: upgrade power supply and sound output from NNC

[nonosto]

Hello

I would like upgrade the power supply and sound system about my NNC. For example is it useful to change for PC ATX something like this?
https://fr.evga.com/products/product.aspx?pn=220-G3-0650-Y3
For example auto adjust for 5V?
I have one idea about output exist some adpter, but for input? I konw someone can make an input adpter, but missing GND. Where can I plug the ground, somewhere on metal part of the cab?
What's sound AMP can advise me? The best ATX + amp in original place in the cab.
Any idea?

THX

 

[Hedonism Bot 2.0]

The NNC Sun Power supply should be adequate, maybe a recap and reflow would help.

The naomi sound amplifier is one of my favorite amplifiers, next to the Model 3 amp. I suggest replacing the speakers in your NNC with these:

View: https://www.youtube.com/watch?v=RP6oMiHicOc


They made a huge improvement in mine.

 

[nonosto]

THX, this speaker is unvallable, what's use today in 2021 please?

 

[djsheep]

^ I like that guys channel. I wish more YT was like that...

 

[nonosto]

finally @Hedonism Bot 2.0 is in right, I tested externally a recent ATX , delivered a perfect 5V to the JAMMA spiltter, but to pcb lower...so manual adjustement required.