MCH

Most are logic ones. The differences between versions seem to be in the components between two of the LEDs

I upload close image of V2, I hope it will be not resized. There are definitely changes also in amplifier section.

Needed to use some coupons and got one of these for 35eur during the last AliExpress sales. Turned out to be v3. Is it worth measuring...

Yes, I remember (not so long ago, maybe until 2020-2021) that amazon.com would charge 6$ for shipping records from US and a private ebay...

The "Audiophonics" case reminds me that I used to buy a lot of equipment in England, amplifiers, speakers, cables, because the selection...

A cheap one

eARC, interesting. Probably irrelevant in this application but still interesting to see.

that will do :)

I would still prefer something like BLE with the lowest power consumption possible, like a regular remote, aiming at several months...

There are a couple of 2 chip 4 channel boards in AliExpress, the one below sometimes branded as aiyima if I remember correctly. I don't...

See first posts. Just bypassed the plate amp and use an external amp, hum gone, me happy ever since :)

The problem with the hum in these subs is when you use them to watch films, in silent passages you can definitely hear the grgrgrgegegrg...

yeah, it is always interesting when the chip in one's device was produced exactly the same week and year and has exactly the same lot...

In my copy, everything is fine in this regard.