Kenwood eXcelon KAC-X542 Car Audio Amplifier Recommendations

Case in point, the KAC-X542 4-channel amplifier can deliver 88 watts each to two pairs of full-range speakers, or 270 watts each to a pair of subs. And this versatile amp controls that powerful output with a variety of tools. Start shaping your sound with the variable high- and low-pass filters, then use the bass level control to adjust the lows, while the treble level control lets you tailor high-frequency output.