JL Audio XDM Series 400w 4 Channel Amplifier - XDM400/4 [010-03115-00]XDM Series 400w 4 Channel Amplifier XDM400 4 100 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