DAP-Audio Qi-4600

This amp is a good price, light weight, small 1u form factor. I bought it to power a pair of mid tops with separate mid drivers and compression drivers, so needed four channels in one box

Unfortunately there's a problem - unacceptably high levels of crosstalk between channels. If I connect a source to input 1 and a driver to output 2, I hear the signal from in 1 on out 2 (and 3 and 4)

I can't send LF content to my mid drivers and have those low frequencies also going to the comp drivers. They'll be damaged. So the crosstalk prevents the amp working for me.

For the record : I bought the same amp twice from two different suppliers. Both behaved the same. So it looks like a design flaw, not a one-off fault.