MB Quart Reference series four channel car audio amplifier featuring innovative sound quality and power technology. The RA1-280.4 is a 280 watt 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.MB Quart Reference series four channel car audio amplifier featuring innovative sound quality and power technology. The RA1-280.4 is a 280 watt 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. 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 2 / 4 Channel 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 SQ: Multi-channel amplifiers utilize the unique MB Quart Class SQ topology. Matched with Q-Stasis the sonic accuracy and clarity exceeds standard Class D amplifiers. 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. 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 SQ (Class D) Amp Total Channels 4 Amp Max Power (watts) 280 Amp Power @ 2 Ohms (ch x watts) 4 x 70 Amp Power @ 4 Ohms (ch x watts) 4 x 50 Amp Crossover Electronic Amp Variable High Pass Crossover 12dB per Octave CH1 & CH2: Switched Full/HPF/LPF 50Hz-250Hz, CH3 & CH4: Switched Full/HPF/LPF 50Hz-250Hz Amp Variable Low Pass Crossover 12dB per Octave CH1 & CH2: Switched Full/HPF/LPF 50Hz-250Hz, CH3 & CH4: Switched Full/HPF/LPF 50Hz-250Hz Amp Bass Boost 0-9dB Amp Subsonic Filter N/A Amp Variable Voltage 0.02-9V Amp Signal to Noise > 101dB Amp Frequency Response 10Hz-35Hz Amp Total Harmonic Distortion (THD) < 0.09% Amp Speaker Level Audio Inputs RCA Amp Power Terminal 12v/GND 4 AWG Amp Speaker Terminal Wire Gauge 12 AWG Amp Fusing 40A External Proposition 65 Notice WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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