i have used their older st series amps for years now, never had any problems with them as far as their performance goes, the only problem I found with that company is that when I needed to have a case replaced as I had bought another amp used and the case was beat up but it worked great, they said they had a new one to put on and I said ok, sent it in got it back in a few days and the case had bent fins, oxidization(sp?) on it, bent mounting tabs, and i called them about it and they said that they didnt have anymore new cases so they just put that one on instead, and this was supossed to be satisfactory, well after a few days of them screwin me over I said it was fine as they didnt want to replace the case or give me my money back so I just sold all of my memphis products and the store I worked at stopped carrying them as well and I moved on to arc audio xxk series amps and havent looked back since, now I realize this may be kind of extreme but dont tell me you can install a new case and send me a sh***y case, if you dont have what I want tell me and Ill look somewhere else. . .
other than that I loved their amps but their customer service is seriously lacking
not trying to make you not buy their products just giving you some info in case you ever need to have any work done by them