Recoil DII400.4 Ultra Compact Full-Range Class-D 4-Channel Car Amplifier 800 Watts
Recoil’s DII400.4 is an ultra-compact, efficient, and highly reliable four-channel Class-D full-range car amplifier. Utilizing the latest Class-D technology, this amplifier delivers impressive audio output while maintaining excellent efficiency. Compact yet powerful, it ensures clear, balanced sound for your aftermarket speaker system in vehicles, marine, powersports, or golfcart applications.
The DII400.4 features top-mounted controls under a protective cover, allowing easy access to gain, LPF, HPF, crossover, and other settings. Built with a conformal-coated circuit board, the amplifier is protected against dust and water, while efficient heatsinks keep it cool during extended use. Ultra-compact dimensions allow easy installation in tight spaces without compromising performance.
Key Features:
- 4-channel Class-D amplifier delivering up to 800W of peak power
- RMS Power @ 2Ω: 100W x 4 channels (14.4V)
- RMS Power @ 4Ω: 60W x 4 channels (14.4V)
- RMS Power (Bridged) @ 4Ω: 200W x 2 channels (14.4V)
- RCA and speaker-level inputs with turn-on mode selection (REM, VOX, DC)
- RCA pass-through outputs
- 2/4 channel input switch for flexible system configuration
- Protection circuitry: Thermal, Voltage, Speaker, Short Circuit
- Top-mounted clip LED indicator and control panel
- Frequency response: 10Hz – 24kHz
- Signal-to-noise ratio: 85dB
- Efficiency @ 4Ω: 78%
- Input sensitivity: 0.2–12V
- High-pass filter: 30Hz – 300Hz
- Low-pass filter: 30Hz – 300Hz
- Fuse rating: 40A
- Ultra-compact design: 5.55″ x 5.37″ x 2.09″ (141mm x 136.5mm x 53mm)
Ideal for powering compact 4-channel speaker setups or bridged subwoofer applications in vehicles, marine, or powersports where space is limited but strong, clean output is needed.
UK Deliveries: Free UK mainland delivery applies to orders over £30 (exceptions apply to remote regions and islands, which will see a surcharge at checkout).
Orders Under 2kg: Most in-stock items arrive in 2–3 working days. Items held by suppliers take 4–6 working days. (Note: Saturday is not a working day).
Orders Over 2kg: Dispatched via trusted couriers including AMAZON Shipping, Royal Mail, DPD, and UPS.
Royal Mail Specifics: Royal Mail aims to deliver in 1–3 working days, though this is not guaranteed. If your item has not arrived after 7 days, please contact us. We can only replace missing items after 14 days have passed.
More information (including international delivery on our Delivery Information page.
Recoil DII400.4 Ultra Compact Full-Range Class-D 4-Channel Car Amplifier 800 Watts
Recoil’s DII400.4 is an ultra-compact, efficient, and highly reliable four-channel Class-D full-range car amplifier. Utilizing the latest Class-D technology, this amplifier delivers impressive audio output while maintaining excellent efficiency. Compact yet powerful, it ensures clear, balanced sound for your aftermarket speaker system in vehicles, marine, powersports, or golfcart applications.
The DII400.4 features top-mounted controls under a protective cover, allowing easy access to gain, LPF, HPF, crossover, and other settings. Built with a conformal-coated circuit board, the amplifier is protected against dust and water, while efficient heatsinks keep it cool during extended use. Ultra-compact dimensions allow easy installation in tight spaces without compromising performance.
Key Features:
- 4-channel Class-D amplifier delivering up to 800W of peak power
- RMS Power @ 2Ω: 100W x 4 channels (14.4V)
- RMS Power @ 4Ω: 60W x 4 channels (14.4V)
- RMS Power (Bridged) @ 4Ω: 200W x 2 channels (14.4V)
- RCA and speaker-level inputs with turn-on mode selection (REM, VOX, DC)
- RCA pass-through outputs
- 2/4 channel input switch for flexible system configuration
- Protection circuitry: Thermal, Voltage, Speaker, Short Circuit
- Top-mounted clip LED indicator and control panel
- Frequency response: 10Hz – 24kHz
- Signal-to-noise ratio: 85dB
- Efficiency @ 4Ω: 78%
- Input sensitivity: 0.2–12V
- High-pass filter: 30Hz – 300Hz
- Low-pass filter: 30Hz – 300Hz
- Fuse rating: 40A
- Ultra-compact design: 5.55″ x 5.37″ x 2.09″ (141mm x 136.5mm x 53mm)
Ideal for powering compact 4-channel speaker setups or bridged subwoofer applications in vehicles, marine, or powersports where space is limited but strong, clean output is needed.
Recoil DII400.4 Ultra Compact Full-Range Class-D 4-Channel Car Amplifier 800 Watts
Recoil’s DII400.4 is an ultra-compact, efficient, and highly reliable four-channel Class-D full-range car amplifier. Utilizing the latest Class-D technology, this amplifier delivers impressive audio output while maintaining excellent efficiency. Compact yet powerful, it ensures clear, balanced sound for your aftermarket speaker system in vehicles, marine, powersports, or golfcart applications.
The DII400.4 features top-mounted controls under a protective cover, allowing easy access to gain, LPF, HPF, crossover, and other settings. Built with a conformal-coated circuit board, the amplifier is protected against dust and water, while efficient heatsinks keep it cool during extended use. Ultra-compact dimensions allow easy installation in tight spaces without compromising performance.
Key Features:
- 4-channel Class-D amplifier delivering up to 800W of peak power
- RMS Power @ 2Ω: 100W x 4 channels (14.4V)
- RMS Power @ 4Ω: 60W x 4 channels (14.4V)
- RMS Power (Bridged) @ 4Ω: 200W x 2 channels (14.4V)
- RCA and speaker-level inputs with turn-on mode selection (REM, VOX, DC)
- RCA pass-through outputs
- 2/4 channel input switch for flexible system configuration
- Protection circuitry: Thermal, Voltage, Speaker, Short Circuit
- Top-mounted clip LED indicator and control panel
- Frequency response: 10Hz – 24kHz
- Signal-to-noise ratio: 85dB
- Efficiency @ 4Ω: 78%
- Input sensitivity: 0.2–12V
- High-pass filter: 30Hz – 300Hz
- Low-pass filter: 30Hz – 300Hz
- Fuse rating: 40A
- Ultra-compact design: 5.55″ x 5.37″ x 2.09″ (141mm x 136.5mm x 53mm)
Ideal for powering compact 4-channel speaker setups or bridged subwoofer applications in vehicles, marine, or powersports where space is limited but strong, clean output is needed.
UK Deliveries: Free UK mainland delivery applies to orders over £30 (exceptions apply to remote regions and islands, which will see a surcharge at checkout).
Orders Under 2kg: Most in-stock items arrive in 2–3 working days. Items held by suppliers take 4–6 working days. (Note: Saturday is not a working day).
Orders Over 2kg: Dispatched via trusted couriers including AMAZON Shipping, Royal Mail, DPD, and UPS.
Royal Mail Specifics: Royal Mail aims to deliver in 1–3 working days, though this is not guaranteed. If your item has not arrived after 7 days, please contact us. We can only replace missing items after 14 days have passed.
More information (including international delivery on our Delivery Information page.





























































































