Pure Resonance Audio RMA500BT 500W Bluetooth Rack Mixer Amp

The Pure Resonance Audio RMA500BT is built for commercial audio systems that need real headroom for both background music and paging. With 500W of Class D power, this rack mount mixer amplifier is a strong choice for busy environments where audio has to stay clear and consistent, even during peak hours.

At the core is a 5-channel mixer section that lets you manage microphones and music sources in one unit, without building a stack of separate components. Bluetooth makes day-to-day music streaming simple, while the included IR remote helps staff control playback and basic functions without touching the rack.

Speaker output flexibility is another big advantage. The RMA500BT supports 70V distributed audio systems for longer wire runs and multi-speaker zones, and it also supports low-impedance loads from 4 to 16 ohms. That makes it suitable for a wide range of installs, from retail and restaurants to schools, offices, warehouses, and houses of worship.

Operational reliability is handled with forced fan cooling using variable speed airflow, plus protection against overheat and short-circuit conditions. This is exactly what you want in a commercial rack environment where equipment may run for long hours every day. You also get tone controls for quick on-site tuning, with bass and treble adjustment points that make it easy to clean up voice or shape music for the room.

For expansion, the Audio Out pre-output (1V) provides a clean way to feed an additional amplifier, recorder, or another zone, which is useful when you need to scale the system later without rebuilding the rack.

Benefits
You get a single rack mount unit with enough power to drive larger 70V systems confidently, while still supporting 4–16 ohm speaker loads when needed. Bluetooth and the IR remote simplify daily music control for staff. Cooling, protection features, and emergency priority help keep paging and announcements dependable in commercial environments.

500W Class D commercial power for strong 70V or 4–16 ohm systems
5-channel mixer for mics, line sources, and paging applications
Bluetooth streaming for quick music playback without extra gear
70V output plus low-impedance 4–16 ohm speaker support
Emergency priority capability for critical announcements
IR remote included for convenient source and playback control
Forced fan cooling with variable speed, side entry airflow design
Built-in protections for overheat and short-circuit events
Tone controls, ±10 dB at 100Hz and ±10 dB at 10kHz
Pre-out (Audio Out) 1V for feeding an additional amp or zone
Rack-ready 1U size with a slim 19 inch chassis footprint