MB Quart Reference series mono subwoofer car audio amplifier featuring innovative sound quality and power technology. The RA1-1500.1 is a 1500 watt 1 ohm stable car audio amplifier. Reference amplifiers feature DC Sensing to allow any amplifier to be easy integrated into an OEM system by simply adapting a RCA cable from the source unit. Bass remote is included. Low Noise Preamplifier Circuit Q-Stasis Pre Amplifier Stage: Maximum low voltage signal from the source unit comes into the amplifier circuit with minimal distortion. RCA Inputs Nickel-Plated: High temperature impact resistant with hex screw terminals that allow for secure connections and is erosion resistant. High Level Inputs See Auto-Sense Feature. Operation Mode Mono only Crossover Type Variable electronic crossovers allow for complete control of the sound. Electronic Equalizer Control of amplifier output with on-board electronic crossover to tailor specific frequencies to speakers and subwoofers. Check specifications for specific frequencies for this amplifier. Class / Topology Class Q1 Mono (Class D): MB Quart’s Class Q1 offers the efficiency of today’s D-Class with increased engineering to focus on sound quality from the power supply through the output devices, the FLUID-FETS. Output Device Technology FLUID-FETS: MB Quart output devices, FLUID-FETS are painstakingly selected for their ability to efficiently produce power and mimic the sound quality of the highest end home amplifiers. Heat Sink Aluminum: Quickly dissipates heat to allow the amplifier to run lower impedance for longer duration. Power Supply Rugged MOSFET Pulse Width Modulation power supply: Allows amplifier to produce efficient power without taxing the vehicle electrical system. Output Connections Heavy duty connections allow for secure electrical signal to pass into wiring and resist erosion which will add longevity to the amplifier. Connection Type Secure connection for all power, ground and speaker connections. Bass Remote Included Included: Wired Bass Remote allows adjustments to bass frequencies to be made from the control mounted anywhere in the vehicle. Auto Turn-On DC SIGNAL SENSE: The DC SIGNAL SENSE switch will allow the amp to turn on when a signal is received on the RCA inputs, so an amplifier remote turn on wire is not needed to turn on the amplifier. This feature can also be turned off. Details & Specs Type Amplifier Brand MB Quart Series Reference Category Mobile Condition New Color Black Warranty 1 Year Compatible Vehicles Universal Amp Class Class Q1 Mono (Class D) Amp Total Channels 1 Amp Max Power (watts) 1500 Amp Power @ 1 Ohm (ch x watts) 1 x 1500 Amp Power @ 2 Ohms (ch x watts) 1 x 1000 Amp Power @ 4 Ohms (ch x watts) 1 x 750 Amp Crossover Electronic Amp Variable Low Pass Crossover 12dB per Octave Variable 50Hz-250Hz Amp Bass Boost 0-12dB Amp Subsonic Filter OFF/25Hz Amp Variable Voltage 0.02-9V Amp Signal to Noise > 99dB Amp Frequency Response 25Hz-250Hz Amp Total Harmonic Distortion (THD) < 0.07% Amp Speaker Level Audio Inputs RCA Amp Power Terminal 12v/GND 4 AWG Amp Speaker Terminal Wire Gauge 12 AWG Amp Fusing 150A External Proposition 65 Notice WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov