Just a couple questions about the Phoenix Gold Octane-R 15.0:1 (I think other octane series are set up the same also). Why does it have two speaker outputs when it is supposed to be a mono amp?? Is there any specific reason for this. Do I just bridge it as I would a normal two channel?? Also, I can't seem to figure out the gain on this amp. Previous amps I have had have clearly stated which control is the gain, but on this it just has Input Sensitivity, Crossover Frequency, Twin-T Bass EQ (Bass Boost), and Subsonic Frequency. Thanks.