They are great little amps, good for small area installs because of size. Good low level of distortion at 0.02-5% thd at RMS load. Check out their new Edge line as well. Like the EGA4220 is a great amp 110x4 at 4ohm with 0.02% thd at $179 they have a nice line of monos too ni this line. I have heard a car with these pushing two pair of Focal 135cv and a 10" A/D/S A10s2 sub, sounded amazing for little money invested