Ruthless Audio 800.4 Micro 4 Channel Amplifier
Key features
- Amplifier channels: 4
- RMS per channel at 4 ohms: 120 W
- RMS per channel at 2 ohms: 200 W
- Amplifier class: D
- High-pass filter: 20 Hz–8 kHz
- Low-pass filter: 50 Hz–8 kHz
Ruthless Audio 800.4 Micro 4 Channel Amplifier - No is backordered and will ship as soon as it is back in stock.
Ruthless Audio 800.4 Micro 4 Channel Amplifier - No is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
The Ruthless Audio 800.4 Micro is a compact, four-channel Class-D car amplifier for powering a full speaker system or a bridged two-channel setup. It delivers 200W x 4 at 2 ohms and measures 9.25" long, making it a space-conscious option when you need substantial rated output.
Use it for front and rear speakers, component drivers, or a compatible bridged setup. Its onboard filters let you adjust crossover points without an external processor.
Key Features & Benefits
- Four-channel output: Run a front and rear speaker stage from one amplifier.
- Bridgeable design: Combine channels 1+2 and 3+4 for a two-channel configuration.
- Compact chassis: The 9.25" overall length suits space-limited installation locations.
- Onboard filters: High-pass and low-pass controls provide crossover adjustment at the amplifier.
- 95dB signal-to-noise ratio: Helps keep background noise low in your audio signal.
- 9–16V operating range: Supports installations across the stated vehicle voltage range.
Technical Specifications
| Specification | Value |
|---|---|
| RMS Power (2Ω) | 200W x 4 @ 14.4V |
| RMS Power (4Ω) | 120W x 4 @ 14.4V |
| Total RMS Power | 800W |
| Amplifier Class | Class-D |
| Channels | 4 (Bridgeable to 2) |
| Frequency Response | 20Hz – 8kHz |
| High Pass Filter | 20Hz – 8kHz |
| Low Pass Filter | 50Hz – 8kHz |
| Signal-to-Noise Ratio | 95dB |
| Fuse Rating | 80A |
| Operating Voltage | 9–16V |
| Overall Length | 9.25" |
| Heatsink Length | 8.25" |
| Width | 4.7" |
| Height | 2.2" |
| Warranty | 1 Year Standard / 2 Year Extended Available |
Why Choose This Product?
The 800.4 Micro combines four-channel flexibility with a short chassis, giving you more placement options than a full-size amplifier. Its Class-D design and built-in crossover filters keep amplification and basic signal adjustment together in one unit.
The supplied comparison with the Ruthless Audio 400.4 describes the 800.4 as offering 200W x 4 versus 100W x 4 at 2 ohms, with the same micro form factor and Class-D design.
Installation & Compatibility Notes
The amplifier is described for component or coaxial speakers rated at 100–200W RMS per channel. For bridging, connect channels 1+2 and 3+4 as directed by the system design, and use speakers rated for a minimum 4-ohm bridged load.
A 4-gauge power and ground wiring kit is recommended for the 80A fuse rating. Keep power and ground runs short, and route RCA cables away from power wiring. For an enclosed under-seat installation, allow 1–2" of airflow clearance around the heatsink.
Its compact footprint and 9–16V operating range are also described for motorcycle, ATV, UTV, and marine audio installations. Check the available mounting space and system requirements before installation.
Frequently Asked Questions
What power does the Ruthless Audio 800.4 produce?
It is rated at 200W x 4 at 2 ohms and 120W x 4 at 4 ohms, both at 14.4V. The listed total RMS power is 800W.
Can I bridge this four-channel amplifier?
Yes. Bridge channels 1+2 and 3+4 for a two-channel configuration. The stated minimum bridged speaker impedance is 4 ohms.
How much mounting space should I allow?
The amplifier measures 9.25" long, 4.7" wide, and 2.2" tall. Its heatsink length is 8.25". Allow 1–2" of airflow clearance around the heatsink in enclosed spaces.
What wiring is recommended?
A 4-gauge power and ground kit is recommended to support the 80A fuse rating. The amplifier can receive a four-channel RCA signal from a head unit or DSP.
Can it be used in powersports or marine audio systems?
The product description identifies motorcycle, ATV, UTV, and marine audio builds as possible applications. Confirm that the installation space and electrical system suit the amplifier’s dimensions and 9–16V operating range.
Explore More
Shop 12 Volt Outlet for your audio system needs. Want to learn more about Ruthless Audio? Explore our Ruthless Audio brand profile.
