Audiopipe has been around for years. Their subs and amps are midgrade at best. However, just like with any other brand, the sound you get will largly depend on the entire setup of your system. Audiopipe does have some subs that hit pretty hard and are not bad for a beginner setup. Remember you get what you pay for. Same thing about their amps. Look at the rms ratings not the max/peak ratings. They appear to be sort of weak. Their D Class amps are pretty expensive, I havent had the oppertunity to see/hear one so I cant comment on whether they are decent or not.