QSC RMX2450a – 2-Channel Stereo Power Amplifier
QSC RMX2450a – 2-Channel Stereo Power Amplifier is backordered and will ship as soon as it is back in stock.
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QSC RMX2450a – 2-Channel Stereo Power Amplifier
Product Overview
The QSC RMX2450a is a two-channel professional low-Z power amplifier rated at 750 watts per channel into 4 ohms, designed for live sound reinforcement and high-demand installed audio. Its 2RU chassis houses two 2-tier Class-H output channels that operate in stereo or mono-bridge mode on a standard 15-amp circuit, with high-current toroidal transformers for low noise and stable 2-ohm performance.
Product Description
The RMX2450a's 2-tier Class-H output stage improves efficiency by drawing on higher rail voltages only when the signal demands it, allowing more output power from a standard circuit. Independent user-defeatable clip limiters reduce distortion, and selectable 30 Hz or 50 Hz low-frequency filters protect loudspeakers and increase headroom. Front-to-rear cooling, front-panel gain controls, signal/clip LEDs, and per-channel DC and thermal protection round out the platform. Inputs accept balanced 1/4-inch and XLR; outputs use Neutrik Speakon and touch-proof binding posts. For higher power in a 3RU chassis, see the QSC RMX4050a.
Key Features
- 750 W per channel at 4Ω — High output for demanding live and installed systems.
- 2-tier Class-H output stage — Efficient power delivery from a standard 15 A circuit.
- Stereo or mono-bridge operation — Combine channels for a single high-power output.
- High-current toroidal transformers — Low noise and stable 2-ohm performance.
- User-defeatable clip limiters — Control distortion under heavy drive.
- Selectable 30/50 Hz low-frequency filters — Protect loudspeakers and increase headroom.
- XLR and 1/4-inch inputs; Speakon and binding-post outputs — Flexible professional connectivity.
Typical Applications
- House of worship
- Multi-purpose room
- Auditorium
Technical Specifications
| Configuration | 2-channel power amplifier |
| Output power (4Ω) | 750 W per channel |
| Output stage | 2-tier Class H |
| Modes | Stereo / mono bridge |
| Transformers | High-current toroidal |
| Filters | Selectable 30 Hz / 50 Hz low-frequency |
| Inputs | Balanced 1/4-inch and XLR |
| Outputs | Neutrik Speakon and touch-proof binding posts |
| Protection | Per-channel DC and thermal; user-defeatable clip limiters |
| Rack size | 2RU |
| Power | Standard 15 A circuit |
Frequently Asked Questions
What is the benefit of the 2-tier Class-H design? Class-H switches to higher voltage rails only when the signal needs them, so the amplifier delivers more output power efficiently from a standard 15-amp circuit.
Can the RMX2450a be bridged to mono? Yes. The channels operate in mono-bridge mode for a single higher-power output.
What connectors does it use? Balanced 1/4-inch and XLR inputs, with Neutrik Speakon and touch-proof binding-post outputs.
What about warranty and support? Coverage follows QSC's published warranty terms. Contact Creation Networks support for help.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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