Re: help understanding amps
That amp could power a 250 watt 4 ohm sub, but that's about it. And no, you can't run a sub and speakers with it at the same time.
Number of channels is how many outputs it has - stereo left & right is 2 channels... stereo front & rear is 4 channels, etc. That amp allows combining the 2 channels into one (called bridging) for a sub.
1999 Buick Park Ave Ultra
Head Unit: JVC KWHDR720
EQ: Audiocontrol EQL
Front Stage: Hybrid Audio Technologies Imagine 5.25 mids, Morel Maximo tweets
Sub Stage: Boston G3 10", 0.5 cu ft sealed
Amp: PPI Phantom 900.4
Rear Fill: Boston SE953 6X9's