DLS Signature S4 4 Channel Class AB Car Amplifier 4x130W RMS Bridgeable

Key features
• Premium 4-channel Class AB amplifier from the DLS Signature Series
• 4 × 130W RMS at 2 Ohm and 4 × 90W RMS at 4 Ohm
• Bridgeable to 2 × 260W RMS at 4 Ohm for more flexible system setups
• Extremely low distortion and very high signal-to-noise ratio
• Adjustable high pass and low pass filters for precise tuning
• High damping factor for tight, controlled speaker performance
• Designed for use with DSP systems for maximum sound quality
• Internal cooling fan for stable operation

Description

The DLS Signature S4 is a high-performance four-channel amplifier designed for audiophile-level car audio systems. As part of the renowned Signature Series, it focuses on delivering extremely clean, detailed sound with minimal distortion, allowing your music to be reproduced exactly as intended.

Built using a traditional Class AB design, the S4 combines warm, natural sound quality with excellent control over speakers. With 4 × 130 watts RMS at 2 Ohms and 4 × 90 watts RMS at 4 Ohms, it provides more than enough power to drive high-quality component speakers or full system upgrades. The amplifier can also be bridged to deliver 2 × 260 watts RMS, making it suitable for powering larger speakers or compact subwoofer setups.

DLS engineered the Signature series with a focus on precision and harmony between every internal component. Each channel is individually optimised, and the amplifier features an extremely high signal-to-noise ratio to ensure you hear only the music without unwanted interference.

The S4 also integrates easily into advanced audio systems. When paired with a digital sound processor, the amplifier can bypass certain pre-amp circuitry so the DSP has full control of tuning, helping deliver a clean and unaltered signal to the amplification stage.

With adjustable crossovers, strong build quality and carefully tuned performance, the DLS Signature S4 is an excellent choice for anyone building a high-quality front stage or full car audio system.

Technical specifications

Channels: 4
Amplifier Class: Class AB
RMS Power @ 2 Ohm: 4 × 130W
RMS Power @ 4 Ohm: 4 × 90W
Bridged Power @ 4 Ohm: 2 × 260W
Frequency Response: 10 Hz – 60,000 Hz
High Pass Filter: 50 – 500 Hz
Low Pass Filter: 50 – 500 Hz
Damping Factor: >300
Signal-to-Noise Ratio: 116 dB (A-weighted)
Input Sensitivity: 1 – 4 V
Input Impedance: 5 kΩ (low level), 45 Ω (high level)
Power Consumption (Idle): 0.7 A
Maximum Power Consumption: 64 A
Cooling: Internal cooling fan
Dimensions: 129 × 320 × 54 mm
Weight: 2.4 kg

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