Description
The Ruthless Audio 800.4 Micro is the sweet spot between stealth and strength. It delivers 800 watts of total RMS power from a chassis only 9.25 inches long, giving you enough output for serious component speakers and pro-audio mids without giving up the install flexibility that makes the Micro line so useful.
WHY CHOOSE THE RUTHLESS AUDIO 800.4 MICRO?
- 200W × 4 @ 2Ω (14.4V) — strong output for demanding component sets and pro-audio drivers.
- 120W × 4 @ 4Ω — clean full-range power for daily-driver systems.
- 1-Year 2Ω Warranty Coverage — standard manufacturer defect coverage includes operation down to 2 ohms per channel when warranty conditions are met.
- Ultra-Compact 9.25 in. Chassis — fits under seats, behind panels, and in tight custom installs.
- High-Efficiency Class-D Design — keeps power density high while controlling heat.
- Bridgeable 4-Channel Layout — channels can be paired for higher-output 2-channel applications when wired to the correct bridged load.
- Onboard HPF & LPF — wide filter ranges give you useful crossover control without requiring a separate processor for basic system setup.
- 95dB Signal-to-Noise Ratio — designed for clean full-range reproduction at high output.
FULL SPECIFICATIONS
| RMS Power @ 2Ω (14.4V) | 200W × 4 |
| RMS Power @ 4Ω (14.4V) | 120W × 4 |
| Total RMS Power | 800W |
| Standard Warranty Load | Down to 2Ω per channel when warranty conditions are met |
| 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 in. |
| Heatsink Length | 8.25 in. |
| Width | 4.7 in. |
| Height | 2.2 in. |
AMPLIFIER & WIRING RECOMMENDATIONS
Use quality OFC power and ground wiring with proper fusing and a short, low-resistance ground. A correctly installed 4 AWG kit is a strong choice for many 800.4 Micro installations. Keep RCA and signal wiring separated from high-current power runs.
For bridged operation, use a minimum 4-ohm bridged load. Standard warranty coverage is down to 2 ohms per channel in stereo operation when all warranty requirements are met.
Give the heatsink room to breathe in enclosed installations. Operation below 11V, excessive clipping, and wiring below the covered impedance are not covered under warranty.
FREQUENTLY ASKED QUESTIONS
Is the 800.4 Micro warrantied at 2 ohms per channel?
Yes. The standard 1-year manufacturer defect warranty covers operation down to 2 ohms per channel when Ruthless warranty requirements are met.
Can I bridge the 800.4 Micro?
Yes. Channels can be bridged in pairs for a 2-channel configuration. Keep the bridged load at 4 ohms or higher.
How is it different from the full-size 800.4?
The Micro version is built around packaging efficiency: a much smaller chassis with 200W × 4 at 2 ohms. The full-size 800.4 produces 220W × 4 and adds the larger Korean platform, Tiffany-style RCA inputs, clip-light function, and wider x10 crossover controls.
Is it good for a stealth install?
Yes. At only 9.25 inches long and 2.2 inches tall, it can fit in locations where a traditional full-size amplifier cannot.
What can void warranty coverage?
Warranty does not cover vibration damage, wire or debris inside the amplifier, wiring below the covered impedance, external RCA damage, excessive clipping, or operation below 11V. Full warranty terms apply.
EXTENDED WARRANTY
No – Standard Warranty (1 Year)
Includes the standard 1-year manufacturer defect warranty, including covered operation down to 2 ohms per channel when all warranty requirements are met.
Yes – Extended Warranty (2 Years Total)
Adds 1 additional year of manufacturer defect warranty coverage for 2 years total.
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