If you get 1507, sabi daw, it's not very clean sounding and that it's good for subs only, not for clarity in your speakers. If you do go 1507, you might be happier also getting a 2CH amp to power your seps. The Fenton 2500 is only 2 channel amp, only good for either speakers or subs. The Fenton 4100 i believe is 4 channels..but a little pricey for a budget setup. Go for Thunder Audio, it's like the 1507 but cleaner, and it's orig pa.