Alpine Status bass powerhouse Alpine's Status System components will play your high-resolution music with incredible high-quality, studio-level purity and sonic fidelity, with a low-frequency impact that'll leave you breathless — almost like the bass and drums are playing inside your car. The HDA-M80 mono subwoofer amplifier produces up to 800 watts RMS, so you can be sure you'll get the big sound you want, with every musical beat felt clearly. Hidden controls and plug-in connectors The amp's tuning controls sit protected under a removable top panel. Adjustable low-pass, subsonic, and bass boost controls shape the amplified signal to match your particular subwoofer, so it'll sound its best. All connections are on one side of the amp, with nifty speaker and power wire plugs, making the amp easy to install or remove while ensuring tight, noise-free connections. There's also a provision for adding an optional wired remote level control so you can tweak your sub's volume from the front seat. Product highlights: mono subwoofer amplifier 500 watts RMS x 1 at 4 ohms 800 watts RMS x 1 at 2 ohms Class-D amplifier technology frequency response: (-3 dB) 8 to 400 Hz variable low-pass filter (50-400 Hz, 24 dB/octave) variable subsonic filter (8-40 Hz, 24 dB/octave) variable bass boost (0-12 dB, 50 Hz) More info: preamp and speaker-level (up to 10V) inputs speaker-level inputs require speaker wire to RCA adapters speaker-level inputs feature signal-sensing amplifier turn-on optional RUX-KNOB.2 wired remote level control available quick-connect speaker and power connectors wiring and hardware not included with amplifier 4-gauge power and ground wire recommended fuse rating: 30A x 3 11.4375"W x 2.125"H x 7.5"D warranty: 1 year 60-day returns MFR # HDA-M80 Item # 500HDAM80 California customers: Please click here for your Proposition 65 WARNING. What's in the box: Alpine HDA-M80 owner's manual If you need assistance accessing this owner's manual, please give us a call. Mono subwoofer amplifier Three 30-amp ATO fuses (installed) Top cover (installed) Power connector plug Speaker connector plug 2 Mounting legs 2mm Allen wrench 2.5mm Allen wrench 4mm Allen wrench Four 3/4" Screws Eight 3/8" Screws Owner's manual (English/ German/ French/ Spanish/ Italian/ Swedish/ Russian/ Chinese) Alpine verification certificate Warranty information Product registration information Power wiring note Featured video: