Description
The ATC R4-150 Pro is a 4-channel, 5U rack-mount power amplifier designed for the most demanding professional recording, mixing, and immersive audio environments. It redefines the amplification standard for precision monitoring each of the four discrete Class A/B MOSFET amplifier channels delivers 150 W and features its own power transformer. Ensuring extremely low crosstalk and the ability to deliver full rated power with all channels active.
A class-leading input stage provides exceptional rejection across the entire audio bandwidth, reducing unwanted interference at the input. With fanless convection cooling, the R1-450 Pro operates silently, making it perfect for installation in control rooms, while thermal and DC offset protection and remote power on/off trigger inputs enable flexible and reliable installation.
Reasons to choose the ATC R4-150 Pro:
- Class-leading stage.
- Exceptional interference rejection across the entire audio bandwidth.
- Fanless convection cooling system: the R4-150 Pro operates completely silently.
- Remote on/off control for convenient, professional integration.
Features:
- 5U/19” Quad-Mono Amplifier
- Four independent 150W MOSFET Class AB channels.
- Low noise, minimal crosstalk, and high common-mode rejection.
- Balanced XLR inputs and Neutrik NL4 outputs.
- Front LED for status and active limiter.
- Remote on/off via trigger.
- Thermal protection against DC offset.
- Fanless convection cooling.
- XLR balanced input (pin 2 hot).
- Input impedance of 20 kΩ.
- CMRR greater than 80 dB (20 Hz – 20 kHz).
- Input sensitivity of 8.9 dBu / 2.15 Vrms.
- Continuous output power of 150 W into 8 Ω.
- Ultra-low residual noise of 39 µV.
- S+N/N ratio of 119 dB (unweighted).
- Frequency response from below 5 Hz to above 400 kHz.
- Crosstalk greater than 100 dB.
- The ideal companion for the ATC SSM12i Pro & ATC SSM25i Pro monitors
- Dimensions: (H x W x D): 221 x 483 x 450 mm
- Weight: 26 kg
- Manual here
