
RDL HR-MP2 Half-Rack Series Dual Microphone Preamplifier with Line-Level Outputs
RDL HR-MP2 Half-Rack Series Dual Microphone Preamplifier with Line-Level Outputs
- Two Independent Microphone PreAlifiers
- Balanced XLR Microphone Inputs
- Independent Controls for Each PreAlifier
- Two Independent Microphone PreAlifiers
- Balanced XLR Microphone Inputs
- Independent Controls for Each PreAlifier
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Become an ADI Customer- Two Independent Microphone PreAlifiers
- Balanced XLR Microphone Inputs
- Independent Controls for Each PreAlifier

RDL HR-MP2 Half-Rack Series Dual Microphone Preamplifier with Line-Level Outputs
HR-MP2 | RL-HRMP2
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Product Overview
The HR-MP2 is a dual channel microphone preamplifier with line-level outputs. Each section provides identical rear-panel signal connections and front-panel controls.
Each preamplifier is equipped with a front-panel FILTER switch to enable or disable a 6 dB/octave low-cut filter with a -3 dB cutoff at 80 Hz. Two additional switches on each input select 24 V or 48 V phantom if the master PHANTOM power selector is ON. The INPUT PAD switch allows the operator to attenuate the input signal by 15 dB prior to the preamplifier input stage, increasing the maximum input level from +5 dBu (attenuator out) to greater than +20 dBu. A POLARITY switch provides signal polarity reversal if needed. The GAIN control provides continuous adjustment between 20 dB and 60 dB. An RDL Dual-LED VU meter is provided adjacent to each gain control. The meters are calibrated to indicate +4 dBu at the associated balanced output. A separate CLIP LED flashes if a signal peak is within 3 dB of clipping. The trigger threshold of the CLIP LED is 17 dB above a normal +4 dBu output.
The HR-MP2 offers exceptional input headroom, wide flat frequency response and extremely low noise with very high common-mode signal rejection. Total harmonic distortion and crosstalk are below the noise floor, allowing the HR-MP2 to be operated as a stereo preamplifier or as two separate mono preamplifiers.
Each preamplifier provides three balanced line-level output formats: XLR male, detachable terminal block and ¼" TRS. A separate summing amplifier provides a combined mono output on a line-level detachable terminal block. Balanced outputs may be wired unbalanced. The rear panel also provides a detachable terminal block and a power input jack to connect 24 Vdc power.
Main Features
- Two Independent Microphone PreAlifiers
- Balanced XLR Microphone Inputs
- Independent Controls for Each PreAlifier
- Switch-Selectable Low-Cut Filter
- Front-Panel 20 to 60 dB Gain Control
- Switch-Selectable 24 or 48 Volt Phantom
- Switch-Selectable 15 dB Input Pad
- Switch-Selectable Polarity Reversal
- Dual-LED VU Meter for Each Preamplifier
- CLIP Indicators for Peaks 3 dB Below Clipping
General Information
Specifications
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ADI Part Number RL-HRMP2 Brand Name Radio Design Labs Manufacturer Radio Design Labs, Inc Manufacturer Part Number HR-MP2 Product Line HALF-RACK Product Model HR-MP2 Product Name HR-MP2 Dual Microphone Preamplifier Product Type Preamplifier Weight 2.36lb
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Audio Channels 2 Impedance 150 ohms
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Maximum Frequency Response 70 kHz Minimum Frequency Response 10Hz
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TAA Compliant No
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Depth 4.6" Form Factor Rack Mount Height 1.7"
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Input Voltage 24V DC
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Length 8.6"
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Limited Warranty 3-Year
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Country of Origin US Environmental Certification WEEE Environmentally Friendly Yes Features 40dB Gain, 6dB/Octave Low-Cut Filter, Dual channel, Dual-LED VU Meters, Half-Rack Enclosure, Polarity Switches, Separate Mono Summed Output