$4,990.00
or pay $831.67/month for 6 months* with the Providence Synchrony Card
We’ll match competitor 0% financing offers —
and accept most Synchrony cards.
The ATC R4-150 Pro is a high-performance, 4-channel 5U rack-mount power amplifier specifically engineered for the rigors of professional recording, mixing, and immersive audio environments (Dolby Atmos®). Built with a “no-compromise” quad-mono design, this amplifier provides the transparent, high-resolution power that world-class studios demand.
True Quad-Mono Architecture: Each of the four 150W channels features its own dedicated power transformer. This eliminates crosstalk and ensures each channel can deliver full rated power simultaneously without sagging.
Discrete MOSFET Class A/B Output: Utilizes ATC’s renowned grounded-source MOSFET stages for ultra-low distortion and a natural, wide-bandwidth frequency response.
Exceptional Noise Rejection: Features a class-leading input stage that reduces common mode interference by at least 10,000x, making it the perfect choice for electrically noisy machine rooms or complex multi-room facilities.
Silent Convection Cooling: Designed for installation directly within control rooms, the fan-less design ensures 100% silent operation while maintaining thermal stability.
Pro-Grade Connectivity: Equipped with balanced XLR inputs and genuine Neutrik NL4 speaker outputs for secure, low-resistance connections.
| Feature | Specification |
| Output Power | 4 x 150W (into 8 Ohms) |
| Amplifier Class | Discrete MOSFET Class AB |
| Rack Size | 5U / 19” Rack Mount |
| Cooling | Passive Convection (Fan-less) |
| Inputs | Balanced XLR |
| Outputs | Neutrik NL4 (Speakon) |
| Protection | Thermal and DC Offset Protection |
| Remote Control | Rear panel 12V Trigger On/Off |
Whether you are powering a 7.1.4 immersive array or multiple pairs of passive monitors, the R4-150 Pro delivers the headroom and reliability required for critical listening. Its bi-color front panel LEDs provide instant status updates on power and limiter activity, while the remote trigger inputs allow for seamless integration into automated studio power-sequencing systems.
| 5 star | 0% | |
| 4 star | 0% | |
| 3 star | 0% | |
| 2 star | 0% | |
| 1 star | 0% |
Sorry, no reviews match your current selections
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov.
Interested in this piece of gear? Due to its size and weight, special shipping arrangements may be required. Fill out the form below and our team will provide you with a custom shipping quote and delivery details.
Interested in this piece of gear? Due to the complexity of this product you’ll need to place an order with one of our Audio Consultants. Fill out the form below and we’ll reach out to you to get an order started with the manufacturer.
