... super slim metal sealed box, TI high efficiency digital amplifier chip, 10" woofer. car amplifierMax power: 180WR.M.S. (4Ω, ... supply circuit70mm super slim metal sealed boxTI high efficiency digital amplifier chip10" wooferFancy wired remote for gain controllingPhase switch:0o/180oVariable ... low-pass filterComplete wire set provided car amplifier (sw813B) withhigh efficiency digital ...