AliExpress 5watt Class A ACA clone build

Hi,

Helping a friend with a build. Yes, its for a friend, and not for me 🙂

He bought a couple of the Pass ACA kits from the store here, and for fun, ordered 4 of the AliExpress 5 watt clones so we can do some A/B listening tests.

I have the 4 amp boards, and swapped out three of the caps on the boards as per a mod he found here on DIYaudio for the ACA boards. I have two power supply boards for the build - each one can power two amps boards.

As he is experimenting with bi amping and active crossovers, I need to hook this all up so the are some options when it comes to the outputs.

The idea is to have the amp built with 4 pairs of speaker outputs so bi amping can be done. However, I also want to be able to bridge the boards so I have two pairs of speaker outputs at a higher power rating.

He ordered an enclosure for the hole amp and I'm about to start drilling, but before I do that, I was hoping to figure out the bi amping/bridged wiring option so as to maximize layout efficiency.

Thanks!

Per

IMG_4041.jpeg
IMG_4043.jpeg