dB Zac said:Rockford fosgate, Kenwood, or Pioneer. I have been involved in some testing with alpines against others and I was shocked by how poorly Alpines came out. I will never own one after seeing these test. The test I saw the alpine do the worst in was when the checked the pre amp output. It was rated to put out over 4 volts RMS, it peaked at 1.8 and only put out .7 unclipped wile running one amp!!