Ruthless Audio
Ruthless Audio 1200.4 Micro
Ruthless Audio 1200.4 Micro
MICRO 4-CHANNEL • RATED AT 14.4V
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The Ruthless Audio 1200.4 Micro is the flagship of the Micro 4-channel lineup. It packs 1,200 watts of total RMS power into a chassis only 10.875 inches long, giving high-output daily builds and space-limited custom installs serious full-range power without the footprint of a traditional amplifier.
WHY CHOOSE THE RUTHLESS AUDIO 1200.4 MICRO?
- 300W × 4 @ 2Ω (14.4V) — flagship-level output for demanding component speakers and pro-audio drivers.
- 180W × 4 @ 4Ω — clean, high-headroom power for traditional full-range 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 10.875 in. Chassis — huge output from a package designed for under-seat, behind-panel, and stealth installations.
- High-Fidelity Class-D Design — strong efficiency and low distortion in a compact thermal package.
- Bridgeable 4-Channel Layout — channels can be paired for higher-output 2-channel applications when wired to the correct bridged load.
- Onboard HPF & LPF — broad crossover ranges provide useful system-tuning flexibility.
- 95dB Signal-to-Noise Ratio / 120A Fuse — clean signal performance backed by current capability appropriate for a 1,200-watt micro amp.
FULL SPECIFICATIONS
| RMS Power @ 2Ω (14.4V) | 300W × 4 |
| RMS Power @ 4Ω (14.4V) | 180W × 4 |
| Total RMS Power | 1,200W |
| 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 | 120A |
| Operating Voltage | 9–16V |
| Overall Length | 10.875 in. |
| Heatsink Length | 9.9 in. |
| Width | 4.7 in. |
| Height | 2.2 in. |
AMPLIFIER & WIRING RECOMMENDATIONS
The 1200.4 Micro deserves real current delivery. Use quality OFC power and ground wiring, proper fusing, and a short, low-resistance ground. A properly installed 4 AWG power/ground kit is the minimum practical recommendation for most builds, with final wire sizing based on run length and system design.
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 airflow in enclosed installs. Operation below 11V, excessive clipping, and wiring below the covered impedance are not covered under warranty.
FREQUENTLY ASKED QUESTIONS
Is the 1200.4 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 1200.4 Micro?
Yes. Channels can be bridged in pairs for a 2-channel configuration. Keep the bridged load at 4 ohms or higher.
How does it compare with the 800.4 Micro?
The 1200.4 Micro steps output up to 300W × 4 at 2 ohms compared with 200W × 4 from the 800.4 Micro. Choose the 1200.4 when the speakers need more headroom but installation space is still limited.
Can it work in an under-seat or stealth install?
Yes. The 10.875-inch overall length and 2.2-inch height make it far easier to package than a traditional full-size 1,200-watt 4-channel amplifier. Leave enough airflow around the heatsink.
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.
MAXIMUM FOUR-CHANNEL MICRO OUTPUT.
300 × 4 WITHOUT THE FULL-SIZE CHASSIS.
The Ruthless 1200.4 Micro is the top-output four-channel amplifier in the Micro lineup, rated at 300 watts RMS × 4 at 2 ohms and 180 watts RMS × 4 at 4 ohms at 14.4 volts. It is built for serious front stages, pro-audio systems and installs where physical space is at a premium.
The compact Class-D platform covers 20Hz–8kHz, with a 20Hz–8kHz high-pass filter and 50Hz–8kHz low-pass filter. Ruthless also positions the amplifier for flexible four-channel use or bridged configurations when more output is needed from fewer channels.
WHY THIS AMP?
THE REASON IT EXISTS.
High-output four-channel power for demanding mids, highs and full-range systems.
Substantial 4-ohm output for conventional component and pro-audio loads.
Wide full-range response with adjustable high-pass and low-pass filtering.
The overall footprint stays compact at 10.875 × 4.7 × 2.2 inches.
VERIFIED SPECIFICATIONS
THE NUMBERS.
COMPACT AMP. SERIOUS FOUR-CHANNEL LOAD.
KEEP THE POWER PATH CLEAN.
The 1200.4 Micro is small enough to fit where a traditional four-channel will not, but its output still deserves properly sized power and ground wiring, secure grounds and a charging system that holds stable voltage under load.
Use fuse protection and wire sizing appropriate to the final installation and follow the amplifier documentation when planning the power path.
SHOP POWER + GROUND →WARRANTY OPTIONS
STANDARD OR EXTENDED.
The standard product option includes a 1-year manufacturer defect warranty. Where offered on the product, the extended-warranty option adds one additional year for 2 years total coverage. Any special low-impedance warranty requirement shown above still depends on the installation meeting Ruthless requirements.
FINISH THE SYSTEM
MATCH THE REST OF THE BUILD.
Choose the speaker or subwoofer load, electrical support, wire size, fuse protection and signal chain before the install starts. The amplifier performs best when the entire system is designed as one package.