This my first experience with Infinity amps. So far i like what i see and hear. I have this powering my front stage of 6.5 CDT components and image tweets and a Memphis 10" sub. The Cdts love power and the Kappa four provides it. The Memphis sub sounds great. I replaced two amps with the Kappa four and my system hasn't sounded better. The Kappa four is simple to install with its small footprint, and adjusting is easy.
This Infinity amp was a pretty penny -- it was worth it though. It’s slim and can fit into tight spaces, but despite that it doesn’t get hot easily. I have it playing on an entire 6-hour drive, played at high levels but it didn’t have any issues whatsoever. I have it hooked to my Kappa 62ix speakers and it sounds amazing!
This amp is one of the best purchases I’ve ever done. Very powerful despite its small design. Brought this to power up my 6.5” speakers.