Selectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom
The 4000-watt RMX4050a operates on a standard 15 amp plug (120V)
Both the RMX4050a and the RMX5050a feature a dual mono, high-current power supply for increased reliability and performance
The RMX4050a's particularly exceptional combination of cooling capacity and electrical efficiency provides robust thermal performance suitable for high continuous power in 2-ohm stereo or 4-ohm bridged applications.
Balanced 1/4-inch (6.3 mm) TRS, XLR, and barrier strip inputs
Touch-proof binding post and Neutrik Speakon® outputs
Front mounted gain controls for easy access
Signal and clip LED indicators for monitoring performance
Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers
3-year warranty plus optional 3-year extended service contract
Model
RMX 850a
RMX 1450a
RMX 2450a
RMX 4050a
RMX 5050a
Power per Channel, Stereo Mode (both channels driven)
8?, FTC 20 Hz–20 kHz, 0.1% tdD
185 W
260 W
450 W
800 (650**) W
1050 W
8?, EIA 1 kHz, 0.1% tdD
200 W
300 W
500 W
850 W
1100 W
4?, FTC 20 Hz–20 kHz, 0.1% tdD
280 W
400 W
650 W
1300 W
1600 W
4?, EIA 1 kHz, 0.1% tdD
300 W
500 W (0.5% tdD)
800 W
1400 W
1800 W
2?, FTC 20 Hz–20 kHz, 1% tdD
–
–
–
1600 W
2000 W
2?, EIA 1 kHz, 1% tdD
430 W
700 W
1200 W
2000 W
2500 W
What Our Customers Say
January 18, 2026
Absolutely no complaints!
A very smart and a well-made product.
- Bevan G..
January 18, 2026
Absolutely no complaints!
I'm happy with this product and its entire, whole, great, great, great purchase.
- Gwydion M..
January 18, 2026
Absolutely no complaints!
A great item that looks really, really, really, really good too.
- Gwydion A..
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