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MB QUART
MB QUART RA1-280.4 Reference 280 Watt Amplifier
$259.99
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MB QUART RA1-280.4 Reference 280 Watt Amplifier
Product details
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.
Specifications
| Weight | 6.3 lbs |
|---|---|
| Dimensions | 15 × 8.5 × 4 in |
| 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 |
Features & Benefits
| 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. |
30-Day Return Policy
At Fuego Bass Shop, we want you to be fully satisfied with your purchase. You can return most products within 30 days of delivery for a refund or exchange.
Please note: Any returns with physical damage or missing original packaging may incur a deduction.
Restocking Fee: A 15% restocking fee will be deducted from your refund to cover handling and restocking.
Refunds will be processed to your original payment method within 5–7 business days after we receive and inspect the returned item.
We ship within the United States (excludes recipients in Alaska, Hawaii, Puerto Rico, U.S. Virgin Islands, and Guam).
At Fuego Bass Shop, we understand the thrill of receiving your car audio equipment quickly. Our shipping process is designed to ensure your order arrives safe, fast, and ready to pump bass.
Most orders are processed within 1–2 business days. Standard shipping usually takes 3–7 business days depending on your location. Expedited shipping is available for select items during checkout.
Once your order is shipped, you will receive a tracking number via email so you can follow your gear every step of the way. Our packaging is designed to protect high-performance audio equipment from bumps, vibrations, and shocks during transit.
Please note: Delivery times may vary during holidays, promotions, or due to carrier delays. We highly recommend verifying your shipping address before completing checkout to avoid delays.
If you have any questions about your shipment or need assistance, our support team is ready to help. We want your experience with Fuego Bass Shop to be as powerful and smooth as our bass systems!
