QSC
QSC RMX850A Power Amplifier 300W Per Channel
★★★★★
300WXLR
Reliable Power for Professional Audio The QSC RMX850a Power Amplifier delivers robust and dependable power for a wide range of audio applications. Designed for performance and durability, this amplifier ensures your sound is always clear and impactful. Brand: QSC Model: QSC RMX850A ...
$449.00*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.
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Overview
Reliable Power for Professional Audio
The QSC RMX850a Power Amplifier delivers robust and dependable power for a wide range of audio applications. Designed for performance and durability, this amplifier ensures your sound is always clear and impactful.
- Brand: QSC
- Model: QSC RMX850A
- Power: 300 Watts per Channel @ 4 Ohms
- Channels: 2
- Inputs: Balanced 1/4" and XLR
- Outputs: Neutrik Speakon and Binding Post
- Mounting Type: Surface Mount
- Dimensions: 24 x 22 x 6 inches
- Weight: 35 pounds
Key Features
Compact size
1/4" (6.3mm) TRS, XLR and barrier strip balance inputs
Binding post and Neutrik Speakon outputs
Front mounted gain controls for easy access
Selectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom
Specifications
Power Output
300W Per Channel
Input Connectors
1/4" (6.3mm) TRS, XLR, Barrier Strip
Output Connectors
Binding Post, Neutrik Speakon
Gain Controls
Front Mounted
Low-Frequency Filters
30 Hz or 50 Hz Selectable
Pros & Cons
👍 Pros
- Offers flexible input connectivity with 1/4" TRS, XLR, and barrier strip balanced inputs for various audio sources.
- Features versatile output options, including binding posts and Neutrik Speakon connectors, accommodating different speaker setups.
- Includes front-mounted gain controls, allowing for quick and straightforward audio level adjustments during operation.
- Protects connected speakers and enhances amplifier headroom with selectable low-frequency filters at 30 Hz or 50 Hz.
- Designed with a compact form factor, making it suitable for installations where space is a consideration.
👎 Cons
- The 300W per channel output might be insufficient for larger venues requiring higher power amplification.
- Specific details regarding the amplifier's weight or exact dimensions are not provided within the features, impacting portability assessment.
- Information about advanced protective circuitry beyond low-frequency filters, such as thermal or short-circuit protection, is not listed.
- The feature set does not detail any digital signal processing (DSP) capabilities for fine-tuning audio output.
- Specific impedance ratings for the output channels are not mentioned, which could be important for matching with various speakers.
Frequently Asked Questions
What types of audio inputs does the QSC RMX850A Power Amplifier support?
The QSC RMX850A Power Amplifier supports balanced inputs via 1/4" (6.3mm) TRS, XLR, and barrier strip connectors, offering flexibility for various professional audio setups.
Are the gain controls easily accessible on this power amplifier?
Yes, the gain controls on the QSC RMX850A Power Amplifier are conveniently front-mounted, ensuring easy access for adjustments during live sound or studio applications.
Can this amplifier protect my speakers from low-frequency overload?
This amplifier includes selectable low-frequency filters at either 30 Hz or 50 Hz, designed to protect your speakers from damaging low-end frequencies and increase overall headroom.
What kind of speaker outputs are available on the RMX850A?
The RMX850A power amplifier features both binding post and Neutrik Speakon outputs, providing secure and reliable connections for a variety of speaker cables and configurations.
Is the QSC RMX850A designed for space-conscious installations?
Yes, the RMX850A Power Amplifier is noted for its compact size, which is beneficial for integration into racks or setups where space efficiency is a priority.
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