What does a 5-channel amp like this power?

It can drive front speakers, rear speakers and a subwoofer from one unit. That replaces two or three separate amps in a basic system.

Is Class AB a problem?

Class AB is less efficient than Class D, so it runs warmer and pulls more current. Plan for good ventilation and wiring sized for the load.

No. It is not rated for marine use, so keep it in a car where it stays dry.

No. Tuning is limited to the amp's own crossovers and gain controls, so a DSP-equipped amp is the better pick if you want detailed tuning.

It powers a sub, but the sub channel is modest by premium standards. Match it to a sub that works well on limited power.

At Best Buy, for $299.00, as of our latest check.

$299.00at Best BuyChecked Nov 9

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