this would be a good amp for ~100$. its cheap but its built pretty good compared to other cheap amps. Wire your subs parallel for 2ohm load. Youll have ~200 watts to each sub. Leave bass boost off and keep gains on low side and you should be fine. Its better to overpower than underpower anyways. You shouldnt have to worry about a clipped signal at all this way either. Most tend to find a cheap amp and overdrive it creating clipped signals that will destroy subs.
MB Quart FX1.400 (fx1400) 400W RMS, 1-Channel Monoblock Formula