RDL EZ-MPA1X Microphone Preamplifier Stereo Output / Compressor / Switchable Phantom / Dual LED Meter

Description

The EZ-MPA1X is a compact microphone preamplifier that converts mic-level signals to line-level stereo outputs. It provides front-panel level control and dual-LED VU metering for quick visual monitoring. The unit includes a front-panel compressor to control peaks and prevent clipping during transient signals.

Key features include a balanced XLR mic input, switch-selectable 24 V phantom power for condenser microphones, and a 20 dB range audio compressor that can be enabled from the front panel. The preamplifier offers an adjustable gain range up to 50 dB to accommodate a wide range of microphone types. Dual outputs are available on RCA or mini-jack connections so the preamp signal can feed two channels or duplicate a single mono source.

Performance specifications include a frequency response of 80 Hz to 40 kHz (±1 dB) and THD+N below 0.1% across typical audio bands. Measured noise is below -65 dB referenced to -10 dBV output for low-noise operation. Common-mode rejection exceeds 55 dB across audio frequencies to maintain signal integrity in balanced installations.

Connectivity is straightforward: a rear-panel balanced XLR mic input feeds the internal preamp and compressor, while -10 dBV nominal outputs are provided on RCA and mini jacks. The preamplified signal is routed to both left and right outputs for stereo distribution or parallel line-level feeds. Switchable phantom power conforms to IEC 61938:2013 at 24 V for condenser microphone compatibility.

The EZ-MPA1X is suited to a range of environments including houses of worship, small performance venues, restaurants, conference rooms and broadcast studios. It is commonly used to add a high-quality mic input to mixers, amplifiers and recording interfaces that accept line-level sources. The compressor provides protection against overloads in live and unpredictable acoustic settings.

Installation is simple thanks to the compact 1/3 rack-width metal chassis and front-panel controls that allow fast setup and realtime adjustments. Power is provided via a 24 Vdc supply with modest current draw to support portable or fixed installations. The rugged construction and straightforward control layout make the unit reliable for both fixed installations and transport between locations.