Sonodyne HS4120P power amplifier
- 4 × 120W RMS Output – Powerful performance for multi-zone commercial audio.
- Energy-Efficient Class-D Design – Low heat, low power consumption, and long lifespan.
- Advanced Built-in DSP – Includes EQ, filters, routing, compressor/limiter, mute, and inversion.
- Supports 4Ω / 70V / 100V Outputs – Compatible with both low-impedance and PA speaker lines.
- USB & RS-232 Remote Control – Easy integration with AV systems and PC configuration.
- Reliable Fan-Assisted Cooling – Ensures stable operation during continuous use.
- 2RU Rack-Mountable Body – Professional, space-efficient chassis for installations.
- External Control Inputs – Mute, standby, and fault contacts for automation setups.
- Low Distortion & High SNR – Clean, clear audio with <0.2% THD and >92 dB SNR.
- Estimated Delivery : Up to 4 business days
- Free Shipping & Returns : On all orders over $200
The Australian Monitor HS4120P is a professional-grade 4-channel 120W power amplifier designed for large-scale commercial audio installations across India. With four independent 120W RMS outputs and support for 4-ohm, 70V, and 100V speaker lines, this amplifier is perfect for multi-zone setups in malls, hospitals, schools, hotels, auditoriums, offices, restaurants, worship places, and more. Powered by high-efficiency Class-D technology delivers clean, stable, and energy-efficient sound output. Its built-in mini DSP (Digital Signal Processor) offers advanced control including EQ, routing, filters, compressor/limiter, and mute functions—giving installers unmatched flexibility. The amplifier also supports USB and RS-232 control, allowing seamless integration into modern AV systems.
1. Can the HS4120P run multiple zones?
A-1Yes. With four independent channels, you can run up to four separate audio zones easily.
2. Does it support 100V line speakers?
A-2 Absolutely. It is compatible with 70V/100V distributed speaker systems, commonly used in commercial PA setups.
3. Is the DSP difficult to use?
A-3 Not at all. The HS4120P offers PC-based control via USB or RS-232 with easy-to-use UI software.
4. Is this amplifier suitable for 24/7 operation?
A-4 Yes. Its Class-D design + fan cooling makes it reliable for long continuous use.
5. Where can this amplifier be used?
A-5 Ideal for malls, offices, hospitals, hotels, gyms, schools, banquet halls, restaurants, and large public spaces.
Specifications
| OUTPUT POWER PER CHANNEL | 120W |
| OUTPUT CHANNELS | 4 |
| OUTPUT MODE | 4 Ohm-70V-100V |
| INPUT VOLTAGE | 100-240Vac 50-60Hz |
| MOUNTING | 2RU |
| FREQUENCY RESPONSE | 100Hz – 16kHz |
| THD+N | < 0.2% (-3dB) |
| SIGNAL TO NOISE RATIO | > 92dB |
| INPUT SENSITIVITY | 1Vrms |
| COOLING | Fan-assisted |
| PRODUCT DIMENSION (W x D x H) | 483mm x 389mm x 89mm |
| NET WEIGHT | 14.0 Kg |













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