i have one here right next to me that i have had for over a year! no problems at all none what so ever! the pre amp is better than the Behringer one that they had has more control and i got it for $89 at Sam Ash (a company i no longer shop at ) but any way i have used it for a lot of things and it has served me well although i have swaped it out for a FIREPOD now i still use it with my windows machine. no worrys a couple things you have to do is make sure you take good care of the power supply and also you can spend a little more money and get a better warrenty from the seller (most times)
if i had it to do over i might think about #1 buying used #2 buying new and spending more money. Tapco is making some nice stuff i hear and also Mackie seems to make nice enough stuff also they make some cheaper Spirit mixers now and a lot of people like the Yamaha MG mixers