JL Audio XDM Series 500w 3 Channel Amplifier - XDM500/3 [010-03343-00]XDM Series 500w 3 Channel Amplifier XDM500 3 100 W x 4 @ 2 75 W x 4 @ 4 14. 4V The ultra compact XDM400 4 packs a serious full range punch, generating a whopping 100 watts to each of its four channels into 2 ohms (14. 4V, 1% THD). The technology that makes this much power possible in such a compact chassis is our advanced NexD high speed switching design, which permits full bandwidth Class D operation with extremely low distortion and remarkable