Unreal quality for the price. Hooked this up to 4 Infinity Reference 6032cf and they absolutely SCREAM in my 2007 Trailblazer, that with my gains set at UNDER 25%. The preamp outputs also make it very convenient for hooking up a sub/second amp. It is also a nice, compact size for a 4-channel amp, allowing me to easily mount it under a seat. No nonsense graphics/plastic casing/etc. garbage like that, just high quality, high performance, at an unbeatable price. This amp would still be worth the cost at $150, EASILY.