No - No - High-pass - 4 Channel Car Amplifiers

In the case of a 4 channel amplifier, use two channels to drive a pair of full-range speakers, and bridge the other 2 channels to power a sub-woofer. Among many features of a 4 channel amplifier are remote sub-woofer level control, tri-mode operation, bridgeable channels and max bridged power to 1000W. Four channel car amplifier provide users multiple input/output selectors to power up to four devices. This is great if you need to power an entire sound system.

Audiopipe APMN-4080 Class AB 78 Watts x 4-Channel Mini Amplifier
$135.99
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Class A/ B 4-Channel Compact Amplifier
4-ohm / 2-ohm stable
Bridged operation
78 watts x 4 channels @ 4 Ω
117 watts x 4 channels @ 2 Ω
250 watts x 2 channels bridged @ 4 Ω
Includes Bass Control Knob
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