I think it's really impressive, especially for the money. I bought it just as an experiment to try out a Tripath amp really, as it's not powerful enough to do most of the speakers I have justice.
I don't have many other HiFi amps to compare to but the clarity right across the frequency range is excellent, obviously very little distortion and still sounds great when pushed hard. One thing that particularly impressed me was its control over the speaker cone, even with lots of low end EQ and the amp nearly at full the bass still sounded very tight, controlled and deep, all at the same time. I didn't expect it to be able to handle such large inefficient speakers so well without running out of headroom, so its got all the detail/resolution for high end work and delivers enough current to handle heavier loads.
I measured the voltage across the reserve capacitors while it was running hard and it never really dropped below ~12.5v, so obviously that supply has enough juice.
Sorry I'm just rambling on - this is the first Tripath amp I've heard so I don't know how it compares to the TA2020. I think some of the kits you can buy have better components and a more refined circuit design but for something cheap in a well made and good looking case with a decent PSU you can't go wrong.
