i had recently bought a pair of jc-1s and also had a negative experience. after hooking them up, noticed a low level buzz coming from one mono block when you were close to it. called parasound and was told this was "normal". when i told rep. the other was dead quiet, his response was,"well, that one is beyond spec." a second problem was one of the standby lights on the front panel did not function properly, and this prompted the dealer to take them back and get me a new pair. i hooked up the new pair, and played them for about 20mins, and heard a loud pop. one of the monoblocks had "blown" (not a fuse), and quit working. at this point, i had had enough. they went back to the dealer and i am currently waiting on a new amp from a different manufacturer. the parasounds may be great sounding amps, but my experience speaks to the overall build quality and quality assurance.