Hertz Mille ML Power 4 - 4-channel car amplifier — 120 watts RMS x 4 The Hertz Mille ML Power 4 combines serious power with flexible configurations, making it ideal for audiophiles looking to upgrade their system. This 4-channel amp delivers 120 watts RMS per channel for full-range speakers, 500 watts bridged for subwoofers, or can even be used for bi-amp setups. For high-powered thrill-seekers Hertz's Mille ML Power 4 amp combines the versatility of a multi-channel amp with some serious full-range Class-D firepower. This Mille Power Series 4-channel amp can send each of your front and rear speakers 120 watts RMS, which is the kind of power that makes high-performance aftermarket components sound their best. You could also use this amplifier in 3-channel mode to power your front speakers with 120 watts RMS each, while sending 500 watts RMS to a subwoofer. Or, with the amp in bridged 2-channel mode, you could power two subwoofers with 500 watts RMS each. Bi-amp a 2-way active system The ML Power 4's onboard variable crossovers have extraordinarily wide frequency ranges — stretching up to 5000 Hz for Channel-A — so, for instance, you could use the amp to power two tweeters with one pair of channels, and a couple midrange or mid-bass woofers with the other pair. Fits and works almost anywhere Hertz engineered this amp using advanced D-Class technology to ensure efficient and reliable performance. The amp's heat sink is built with both extruded and die-cast aluminum to help keep the amp running cool, even when pushed hard. High-level inputs feature Hertz' ART™ (Automatic Remote Turn-on), so this amp can be used to improve the sound in almost any system, even one using the factory radio. Product highlights: 4-channel car amplifier 120 watts RMS x 4 at 4 ohms (250 watts RMS x 4 at 2 ohms) 500 watts RMS x 2 bridged at 4 ohms (4-ohm stable in bridged mode) CEA-2006 compliant Class-D amplifier technology frequency response: 5-55,000 Hz Channel A: variable high- or low-pass filter (50-5000 Hz, 12 dB/octave) Channel B: variable high- or low-pass filter (80-3300 Hz, 12 dB/octave) Other Features: preamp and speaker-level inputs Automatic Remote Turn-on with speaker-level inputs preamp outputs fuse rating: 40A x 2 wiring and hardware not included with amplifier 4-gauge power and ground wire recommended 11-3/8"W x 1-7/8"H x 6-3/4"D