RA1-710.5 Reference 700 Watt Amplifier

MB Quart RA1-710.5 Reference 700 Watt 5 Channel Amplifier with Bass Remote.

$ 299.95

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SKU: 806576232674 Category:

MB Quart Reference series five channel car audio amplifier featuring innovative sound quality and power technology to run four full range channel and a subwoofer channel. The RA1-710.5 is a 700 watt 1 ohm stable (channel 5 only) 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.

Weight 7.4 lbs
Dimensions 18.5 × 8.5 × 4 in



MB Quart










1 Year

Compatible Vehicles


Amp Class

Class Q1 Mono: Channel 5 (Class D), Class SQ (Class D)

Amp Total Channels


Amp Max Power (watts)


Amp Power @ 1 Ohm (ch x watts)

1 x 350 Ch5 Only

Amp Power @ 2 Ohms (ch x watts)

4 x 100 + 1 x 150 Ch5

Amp Power @ 4 Ohms (ch x watts)

4 x 50 + 1 x 150 Ch5

Amp Crossover


Amp Variable High Pass Crossover 12dB per Octave

CH1 & CH2: Switched Full/HPF 50Hz-250Hz, CH3 & CH4: Switched Full/HPF 50Hz-250Hz

Amp Variable Low Pass Crossover 12dB per Octave

CH5 ONLY: Variable 50Hz-250Hz

Amp Bass Boost


Amp Subsonic Filter


Amp Variable Voltage


Amp Signal to Noise

> 101dB

Amp Frequency Response

10-35kHz Ch1-4 | 10-250Hz Ch5

Amp Total Harmonic Distortion (THD)

< 0.07%

Amp Speaker Level Audio Inputs


Amp Power Terminal 12v/GND


Amp Speaker Terminal Wire Gauge

12 AWG

Amp Fusing

80A External

Proposition 65 Notice WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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 / 5 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

Innovative use of Class SQ (Class D) for full range and a Class Q1 (Class-D) amplifier to drive the subwoofer frequencies.

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.

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MB Quart Reference Amplifiers (RA1) Quick Start Guide (Rev1)