TA600 bought one in August 2007 to power a bass in mono (ie bridge)

Amp down after a few weeks (starts after protection qq minutes).
I check my installation with another hardware ... no problem!

So I would say "bad luck" a good quality price ... but the rest of the Chinese hardware ... so unreliable ...

If not supported by Thomann via UPS Repair Tool .... say nothing of the ct, o)

I plan to buy an amp a bit more srieux: o)