Watch the DS18 FRP Dyno Tests

See the FRP series tested on the dyno and get a closer look at the compact full-range amplifier platform.

Full-Range Monoblock — Not Just for Bass

The FRP series is designed as a full-range single-channel amplifier. That means it is not limited to conventional subwoofer duty.

Depending on the crossover configuration and speaker system, an FRP amplifier can be used for bass, large mid-bass drivers, midrange arrays, or other high-output single-channel applications.

FRP-2.5K – 2500W RMS

The FRP-2.5K is the smallest of the three models in this listing but still delivers substantial single-channel power from a compact chassis.

• 700W RMS × 1 @ 4Ω.
• 1300W RMS × 1 @ 2Ω.
• 2500W RMS × 1 @ 1Ω.
• 2800W burst output @ 1Ω.
• 10 Hz – 20 kHz frequency response.
• 1–4Ω stable operation.
• 0–12 dB bass boost centered at 50 Hz.
• Remote level control included.
• Power, protection, and clipping indicators.
• Dual smart cooling fans.
• 0 AWG power input capability.
• 200A recommended fuse.

FRP-3.5K – 3500W RMS

The FRP-3.5K steps output up to 3500 watts RMS at 1 ohm while maintaining the same narrow 5.5-inch chassis width that makes the FRP platform attractive for space-limited builds.

• 1000W RMS × 1 @ 4Ω.
• 2000W RMS × 1 @ 2Ω.
• 3500W RMS × 1 @ 1Ω.
• 4000W burst output @ 1Ω.
• Full-range single-channel Class-D architecture.
• Clip and protection monitoring.
• Remote level control.
• 300A recommended fuse.
• 10.2″ × 5.5″ × 2.36″ chassis.

FRP-5K – 5000W RMS

The FRP-5K is the highest-output model in this product group, delivering 5000 watts RMS at 1 ohm for systems with the electrical infrastructure and speaker configuration required to use that level of power safely.

• 1500W RMS × 1 @ 4Ω.
• 2900W RMS × 1 @ 2Ω.
• 5000W RMS × 1 @ 1Ω.
• 5600W burst output @ 1Ω.
• Full-range single-channel Class-D architecture.
• Clip and protection monitoring.
• Remote level control.
• 500A recommended fuse.
• 12.2″ × 5.5″ × 2.36″ chassis.

Compact Design for Motorcycle and Powersports Builds

High-output bagger systems often need multiple amplifiers, DSP hardware, distribution, battery upgrades, and substantial power wiring in very limited space. The FRP series keeps chassis width and height compact while increasing chassis length as output rises.

Protection and Thermal Management

High-current amplifiers need proper thermal and electrical protection. DS18 equips the FRP platform with cooling and protection systems designed to help protect the amplifier and connected system during demanding operation.

• Smart cooling fan system.
• Thermal protection.
• Overload protection.
• Short-circuit output protection.
• DC output protection.
• High- and low-voltage protection.
• Power, protection, and clipping LED indication.

Built for Harsh Audio Environments

DS18 uses protective treatment on the FRP amplifier circuit board to help resist moisture-related corrosion, while bonded internal components help improve vibration resistance.

Those characteristics make the FRP platform well suited for motorcycles and powersports installations when the amplifier is mounted and protected correctly.

Electrical System Requirements

These are high-current amplifiers. The larger FRP models can require substantially more electrical capacity than a stock motorcycle charging system can continuously provide.

• FRP-2.5K recommended fuse: 200A.
• FRP-3.5K recommended fuse: 300A.
• FRP-5K recommended fuse: 500A.
• Use appropriately sized OFC power and ground cable.
• Install proper battery-side fuse protection.
• Keep grounds short and connected to appropriate low-resistance points.
• Evaluate battery reserve and charging-system capability before installation.
• High-output motorcycle builds may require upgraded battery capacity and electrical support.

Available in Blue, Red or Titanium

Each FRP power level in this listing is available in Blue, Red, or Titanium, allowing the amplifier finish to be matched to the rest of the build.

• FRP-2.5K – Blue / Red / Titanium.
• FRP-3.5K – Blue / Red / Titanium.
• FRP-5K – Blue / Red / Titanium.

Installation and System Planning

• Calculate the final speaker impedance before selecting an amplifier model.
• Verify RMS speaker power handling against available amplifier power.
• Use correct crossover settings for the specific drivers being powered.
• Establish proper gain structure throughout the source, DSP, and amplifier chain.
• Use correctly sized power, ground, and speaker wiring.
• Fuse the main power cable appropriately at the battery.
• Provide adequate airflow around the amplifier.
• Monitor charging voltage under sustained load.
• Professional installation is strongly recommended for high-current motorcycle systems.

Need Help Choosing Between 2500W, 3500W and 5000W?

The correct amplifier depends on much more than the biggest wattage number. Speaker impedance, speaker count, RMS power handling, crossover range, electrical capacity, battery configuration, charging system, installation space, and the intended system goal all matter.

Tell Garage Bagger Stereo what speakers you are running, how they are wired, what motorcycle you have, and what you want the system to accomplish. We can help determine which DS18 FRP model makes sense for the build.