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36 Instalments
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2 Years Warranty
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36 Instalments
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2 Years Warranty
Quad-mono 4 x 150 W power amplifier
The ATC R4-150 Pro is a 4-channel 5U rack-mount power amplifier for the most demanding professional recording, mixing and immersive audio environments. It is ideal for ATC’s passive SSM wall and ceiling monitors in Dolby Atmos systems.
Four channels, four transformers
Each of the R4-150 Pro’s four 150 W MOSFET class AB channels has its own power transformer. This keeps crosstalk very low and lets the amplifier deliver full power with all channels driven, ideal for the many channels of a Dolby Atmos system.
For electrically noisy environments
The input stage rejects interference by at least 10,000 times across the audio band. This makes the R4-150 Pro well suited to machine rooms and complex multi-room facilities with long cable runs.
Silent operation, hand-built in England
With no fans and pure convection cooling, the R4-150 Pro can even be installed inside the control room. It offers thermal and DC offset protection and remote trigger inputs, and is hand-built by ATC in England.
Features
- Quad-mono 5U/19″ power amplifier for professional installations
- 4 independent 150 W grounded-source MOSFET class AB channels
- Dedicated power transformer for each channel
- Very low noise and crosstalk, exceptionally high CMRR
- Balanced XLR inputs and Neutrik NL4 speaker outputs
- Front-panel bi-colour LEDs for power and limiter
- Rear-panel remote trigger on/off inputs
- Thermal and DC offset protection, fanless convection cooling
Specifications
- Power: 4 x 150 W (continuous, 0.1% THD, 8 Ω, all channels driven)
- Input: female XLR (pin 2 hot), 20 kΩ impedance
- CMRR: > 80 dB (20 Hz – 20 kHz)
- Input sensitivity: 8.9 dBu / 2.15 Vrms (ref. 150 W)
- THD+N: 0.0007% (1 kHz, −1 dB below full power)
- S+N/N: 119 dB (ref. 150 W, unweighted)
- Frequency response: < 5 Hz – > 400 kHz (−3 dB)
- Crosstalk: > 100 dB (20 Hz – 20 kHz)
- Damping factor: > 500
- Outputs: Neutrik NL4 (pins 1+, 1−)
- Power consumption: 4 W standby, 82 W idle, 956 W full power
- Dimensions (H x W x D): 221 x 483 x 450 mm
- Weight: 26 kg
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