Reiss RS-W4100.4 4-channel amplifer Class AB 100Wx4 @ 4 ohm

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Reiss RS-W4100.4 is a high-performance 4-channel Class AB amplifier designed to power strong speaker systems with clarity and musicality. It combines raw output with precise control and is perfect for anyone who wants a system that delivers both dynamics and purity – regardless of volume. The RS-W4100.4 is engineered to offer true analog character with modern efficiency and reliability.

High power and versatile application

With 100 W RMS per channel @ 4 Ohm and up to 140 W RMS @ 2 Ohm, the RS-W4100.4 provides plenty of power for both speakers and midbass drivers. When bridged, it delivers 280 W RMS x2 @ 4 Ohm, making it ideal for stronger front systems or a compact subwoofer solution. Its wide 10–20,000 Hz frequency range offers natural, linear reproduction with full control over every detail in the audio.

Flexible sound tuning

With adjustable filters, the RS-W4100.4 can easily be tailored to your system’s needs. The high-pass filter can be set between 100–1,000 Hz, and the low-pass filter between 40–400 Hz, giving you full control over where the frequencies meet. A Bass Boost function (0–12 dB) adds extra depth and impact when you want more presence in the low end.

Stable construction and reliable performance

The RS-W4100.4 operates on 9–16 V and features an input sensitivity of 0.2–6 V, making it compatible with both factory head units and aftermarket setups. Two 45A fuses ensure stable power delivery and protect against overload, while the high damping factor >170 guarantees tight bass response and precise playback. With a signal-to-noise ratio >90 dB and low distortion (<0.3%), the amplifier maintains clarity even at high output levels.

Compact power in an elegant format

Despite its strong construction, the RS-W4100.4 is conveniently sized at just 318 × 182 × 54 mm, making it easy to install in most setups. The robust aluminum chassis ensures effective cooling and long lifespan, while the Class AB topology delivers the classic warm sound that enthusiasts appreciate.

Reiss RS-W4100.4 is the amplifier for those who want to combine high power, musical clarity and technical stability – every day, in every note.

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Technical Specifications

• Number of channels 4 channels
• Amplifier class Class AB
• Power into 2 ohms RMS 4x 140W
• Power into 4 ohms bridged RMS 2x 280W
• Power into 4 ohms RMS 4x 100W
• Frequency range 10 - 20,000 Hz
• High pass filter 100 - 1,000 Hz
• Low pass filter 40 - 400 Hz
• Bass boost 0 - 12dB
• Damping factor > 170
• Operating voltage 9 - 16V
• Input sensitivity 0.2 - 6 V
• Fuses 2x 45 A
• Signal noise > 90dB
• THD < 0.3%
• Dimensions 318 x 182 x 54 mm