Description
DS18 FRP-1.2K4/RD-1
The FRP‑1.2K4 is a compact 4‑channel Class‑D car audio amplifier designed to power speakers with clear, powerful sound across your vehicle system. Its advanced digital design delivers up to 1200W RMS total output, making it ideal for driving front and rear speakers or mids and highs in a full‑range setup. The amplifier includes selectable high‑pass, low‑pass, and full‑range crossovers plus a bass boost control, ensuring flexible tuning for different sound preferences. Built‑in smart cooling fan and multiple protection circuits (thermal, overload, short circuit, voltage, and clipping) provide reliable performance, while compact size and sturdy build make installation easy in most vehicles.
Specifications
| Specification |
Details |
| RMS Power @ 4 Ω |
4 × 120 W |
| RMS Power @ 2 Ω |
4 × 200 W |
| RMS Power @ 1 Ω |
4 × 300 W |
| RMS Power @ 4 Ω Bridge |
2 × 350 W |
| RMS Power @ 2 Ω Bridge |
2 × 500 W |
Audio
| Specification |
Details |
| Frequency Response |
10 Hz – 20 kHz |
| Signal to Noise Ratio |
90 dB |
| Efficiency @ 4 Ω |
97% |
| Damping Factor |
90 |
| Input Impedance |
10 kΩ |
| Channel Separation |
50 dB |
| Total Harmonic Distortion (THD) |
0.5% |
| Low Level Input Range |
400 mV – 6 V |
| High Level Input |
No |
| Selectable X-Over |
HPF / FULL / LPF |
| X-Over Filter Range |
10 Hz – 2 kHz |
| Bass Boost Range |
0–12 dB |
| Bass Boost Frequency |
50 Hz |
| Phase Selector |
No |
Features
| Feature |
Details |
| Amplifier Class |
Digital |
| Amplifier Type |
Full-Range Multi-Channel |
| Number of Channels |
4CH |
| Minimum Impedance |
1 Ω Stereo / 2 Ω Bridge |
| LED Indicator |
Power / Protect / Clipping |
| Power Input Terminal Size |
4 GA |
| Fuse Size (Recommended) |
140 A |
| Cooling Fan |
Yes (Smart Cooling × 1) |
| Voltmeter |
No |
| Thermal Protection |
Yes |
| Over-Load Protection |
Yes |
| DC Output Protection |
Yes |
| Short Circuit Output Protection |
Yes |
| Voltage Input Protection |
Yes |
| Clipping Protection |
Yes |
| Body Color / Finish |
Blue / Red / Titanium |
| Compact Size |
Yes |
| Stable / Reliable Four Layers PCB Design |
Yes |
| Surface Mount Component Technology |
Yes |
| Quality Control Verification |
Yes, using Audio Precision Instruments |
| Tiffany RCA Terminal |
Yes |
| LED Clip Indicator |
Yes |
| Metal Knobs with Click Steps |
Yes |
| Input Selector |
Yes (2ch / 4ch) |
| Remote Level Control with Clip Indicator |
No |
| Remote Level Control with Clip Indicator and Voltmeter |
No |
Measurements
| Dimension |
Size |
| Overall Length |
7.2″ / 183 mm |
| Overall Width |
5.5″ / 140 mm |
| Overall Height |
2.4″ / 63.5 mm |
| Heatsink Length |
6″ / 152 mm |
| Gross Single Unit Weight |
1.6 kg |
Product Overview
FULL RANGE POWER IS BACK!
The FRP-1.2K4 delivers serious power for high-efficiency performance across your entire system: this compact 4-channel amp drives mids, highs, or subs with clarity and punch—all while staying cool under pressure.
Built for VersatilityStable at 1 Ohm per channel or 2 Ohm bridged, the FRP-1.2K4 adapts to your build. With fully variable HPF, LPF, and full-pass crossover options, plus up to 12dB of bass boost at 50Hz, this amp gives you full control of your sound. The smart cooling fan and surface-mount tech ensure rock-solid performance on the go.
Compact Doesn’t Mean CompromiseThanks to its digital Class D design and Tiffany RCA terminals, the FRP-1.2K4 stays efficient and clean while pushing up to 1200W RMS. Audio Precision-tested and built with protective coatings, it’s ready for real-world abuse without skipping a beat.
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