Alpine MRV-M500 Mono V-Power Digital Amplifier 500W RMS X 1 (2&#937;, 14.4V, &#8804;1% THD+N) 300W RMS X 1 (4&#937;, 14.4V, &#8804;1% THD+N) Evolution To Class D Digital Platform New Snap-on Terminal Covers For Easy Installation