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ATC R4-150 Pro

SKU: APA2026-01411
  • 36  Instalments
  • 2 years warranty
    2 Years Warranty
  • 36  Instalments
  • 2 years warranty
    2 Years Warranty
5.250 €
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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.

ATC R4-150 Pro
ATC R4-150 Pro

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.

ATC R4-150 Pro
Specifications

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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