QSC RMX 850a
Professional music gear - detailed information and where to buy
QSC
RMX 850a
Product Info
* Prices may vary. Check retailer for current pricing and availability.
The RMX 850a is a workhorse amp—a classic for a reason. It's a no-frills powerhouse, perfect for bands and venues needing reliable, clean amplification without a ton of extra features. If you need serious power and dependability in a rack-mountable format, this is a solid choice.
Product Description
- QSC RMX 850a
- Power Amplifier
- Format: 19" / 2 U
- 2x 300 W / 4 Ohms
- 2x 200 W / 8 Ohms
- 2x 430 W / 2 Ohms
- 1 x 830 W / 2 Ohm stereo or 4 ohm bridged applications
- Balanced TRS
- and barrier strip inputs
- Mono parallel mode
- Speaker Twist and binding post outputs
- Adjustable-/ switchable HP filter
- Switchable limiter
- GND Lift
- Amplifier and circuit protection
- Quiet fan
- Weight: 15.9 kg
- Housing depth: 36 cm
- 3 Year warranty
PROS
- • Rock-solid QSC build quality; feels incredibly durable.
- • Clean, powerful amplification; handles demanding loads easily.
- • Flexible bridging capabilities for serious headroom needs.
- • Quiet operation; fan noise is minimal even under load.
CONS
- • Size and weight make transport and installation challenging.
- • Limited EQ options compared to more modern amps.
- • Lacks network connectivity; no remote control or monitoring.
Product Video
Key Features
Power (Watts)
830W (bridged, 4 ohms)
Channels
2
Class
AB
Impedance
2-8 ohms
Cooling
Forced Air
Weight
15.9 kg
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Frequently Asked Questions
It’s a classic design; newer models offer more features like network control, but the 850a delivers comparable power and reliability at a more affordable price point.
Absolutely, the robust power delivery and low impedance handling make it a great choice for driving subwoofers, especially in bridged mode.
It effectively doubles the power output into the connected load, allowing you to drive more speakers with greater headroom and reduced stress on the amplifier.
