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Black rectangular monoblock car amplifier with illuminated logo, 10.43 by 9.21 by 2.24 inches

BOSS Audio Systems R1100M 1100W Monoblock Car Amplifier

SKU CH-2W54-FEEEB MPN R1100M

Delivers up to 1100 watts max power at 2 ohms with MOSFET supply and variable low-pass crossover 35–160 Hz

  • Amplifier channels1
  • Product typeBoss Audio R1100M Riot 1100-Watt Monoblock
  • Product colorBlack
  • Product dimensions9.21 in × 10.43 in × 2.24 in
  • 1100 W max power at 2 ohms drives strong bass
  • MOSFET power supply delivers efficient high-output performance
  • Variable low-pass crossover 35–160 Hz tailors subwoofer frequency response
  • Bass boost up to 18 dB adds low-end punch
  • Thermal, short and overload protection circuits safeguard the amplifier

Power and impedance ratings

The BOSS Audio Systems R1100M is a monoblock Class A/B car amplifier built to drive a single subwoofer. It delivers 1100 watts max power at 2 ohms and 550 watts max at 4 ohms, with stable operation from 2 to 8 ohms. A MOSFET power supply provides efficient current delivery for consistent bass output.

System fit and install scope

This amplifier suits owners adding a subwoofer to a factory or aftermarket head unit, thanks to both RCA and speaker-level inputs with a soft turn-on circuit. Buyers needing multiple channels for full-range speakers or those wanting a dedicated mono Class D design for higher efficiency should consider other configurations.

Crossover and bass tuning range

The variable low-pass crossover adjusts from 35 Hz to 160 Hz and the bass boost spans 0 to 18 dB, letting you shape the subwoofer response to the enclosure and vehicle cabin. These controls, plus the included remote level knob, determine how precisely the amp integrates with your system.

How it compares

Measured against everything we stock in Car Audio Amplifiers, at today’s prices. Recalculated every night.

Price $91.99
Cheaper than about 76% of the 158 comparable items (median $225.49).

Specifications

Product
Brand nameBOSS Audio Systems
Model nameR1100M
Part numberR1100M
Product typeBoss Audio R1100M Riot 1100-Watt Monoblock
Product colorBlack
Audio & video
Amplifier channels1
Size & build
Product dimensions9.21 in × 10.43 in × 2.24 in

Questions about this item

How can I confirm the amplifier is operating correctly once it is installed?

The power LED should light up and the protection LED should stay off; with a signal playing you should hear clean bass from the subwoofer and the remote subwoofer control knob should adjust the level smoothly.

What comes in the box and what extra items will I need to buy?

The amplifier includes a 30 amp ATO blade fuse and a remote subwoofer control; you will need to purchase power wire, ground wire, RCA cables or speaker-level wiring, and a suitable fuse holder separately.

Which impedance setting should I choose for my subwoofer setup?

The amp is stable from 2 to 8 ohms and delivers 1100 watts max at 2 ohms or 550 watts max at 4 ohms, so match the setting to your subwoofer's rated impedance for the power level you want.

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