Reiss RS-W4120.4

Reiss RS-W4120.4 – 4-Channel Class AB Amplifier 120W x4 @ 4 Ohm with Power, Control and Precision

Reiss RS-W4120.4 is the flagship model in the Reiss AB series, engineered to deliver both power and acoustic finesse in a single unit. This 4-channel amplifier combines analog warmth with high output and precise control – perfect for those who want to power strong front systems or an entire speaker setup with accuracy and dynamics. The RS-W4120.4 is built for enthusiasts who demand both musicality and raw strength from their audio systems.

Powerful performance and versatility

With 120 W RMS per channel @ 4 Ohm and up to 160 W RMS @ 2 Ohm, the RS-W4120.4 has more than enough power to drive even demanding speakers. When bridged, it delivers 320 W RMS x2 @ 4 Ohm – perfect for feeding midbass drivers or compact subwoofers with both force and control. Its wide 10–20,000 Hz frequency range ensures natural reproduction with clear separation and rich detail across the spectrum.

Fine-tuned control for any system

The amplifier is equipped with adjustable filters that make system tuning easy. The high-pass filter can be set between 100–1,000 Hz, and the low-pass filter between 40–400 Hz, offering great flexibility for active configurations. With Bass Boost (0–12 dB), you can also enhance the low-end whenever extra fullness and impact are desired.

Stable operation and reliable construction

The RS-W4120.4 operates reliably between 9–16 V and features an adjustable input sensitivity of 0.2–6 V, making it compatible with both factory head units and aftermarket DSP processors. Three 35A fuses ensure stable power delivery even under heavy load, while a damping factor >170 provides tight, controlled bass response. With a signal-to-noise ratio >90 dB, the RS-W4120.4 delivers clear and dynamic sound even at high volumes.

Power in an elegant format

Despite its impressive output, the RS-W4120.4 remains relatively compact at 379 × 182 × 54 mm. The chassis is built from robust aluminum for effective cooling and long-term durability, while the classic Class AB architecture provides the warm, natural sound that many audio enthusiasts prefer.

Reiss RS-W4120.4 is the ideal choice for those seeking pure power, precise control and musical authority – an amplifier solution that elevates your entire audio system to the next level.