Dual Mic Preamp

ANYWHERE YOU NEED...
• XLR In/Out Stereo Microphone Preamp
• Gain Trim on Both Channels
• Selectable Phantom on Each Input
• Front or Rear Panel Line Level Outputs
• Low Noise Audio Performance
• RF Filtered Inputs

You Need The RU-MP2!

The RU-MP2 is part of the group of RACK-UP products from Radio Design Labs. RACK-UPs feature the
advanced circuitry for which RDL products are known, combined with accessible user-friendly controls and
displays. The ultra compact design permits high-density installations, with three products mounted in a
single rack unit! Single RACK-UPs can be mounted right where they are needed using the adhesive
mounting method popularized by RDL’s STICK-ON® series of products. Optional brackets permit mounting
a RACK-UP module above, below, or in front of any flat surface!
APPLICATION: The RU-MP2 is the ideal choice where a connectorized mic-to-line audio preamplifier is
needed. This unit features two separate, isolated mic preamplifiers. The RU-MP2 may be used in stereo
applications, or as two individual monaural preamplifiers. Inputs may be strapped to provide phantom
power through the standard XLR connectors. The outputs are low impedance balanced, designed to drive
short or long balanced lines. Outputs are driven through XLR connectors on the front panel, and are also
available on the rear-panel barrier block. When rack-mounted, microphones may be plugged into the front,
while the line-level outputs are hard-wired inside the rack. Both the front panel output XLR connectors and
the rear-panel output terminals are active at all times.
Gain trim is provided for each channel on front panel controls, accommodating a wide variety of dynamic
or condenser microphones. The knurled adjustments are provided with screwdriver slots so the gain trim
may be adjusted by hand or by screwdriver. Audio output connections may be wired unbalanced as
needed in certain systems. The RU-MP2 performance is tailored around industry standard +4 dBu output
levels. Excellent frequency response, phase response, distortion and low noise performance combine to
produce the audio clarity and precision for which RDL products are well known.
XLR input and output connectors are firmly attached to the steel front panel for superior mechanical
integrity. The 24 Vdc power supply input is provided on full-size barrier block connections on the rear
panel. The RU-MP2 may be operated on 12 Vdc with a decrease in headroom.
When a single or dual channel, connectorized microphone preamplifier is needed to provide superior
audio clarity, user adjustments, reliability, compactness and unsurpassed versatility, the RU-MP2 is the
ideal choice.

Input Connectors:		XLR (3-pin)
Input Source Impedance:		150 to 600 Ω balanced; 5 kΩ unbalanced
Output Connectors:		XLR (3-pin)
Output Impedance:		150 Ω balanced to drive high or low impedance lines
Channels:		2 (left & right; may be used independently as 2 separate mono amplifiers)
Gain:		45 to 65 dB (front-panel adjustable each channel)
Frequency Response:		25 Hz to 20 kHz (+/- 0.5 dB)
THD+N:		< 0.050%
CMRR:		> 60 dB
Noise:		< -75 dB (below +4 dBu output ref. 150 Ω source; 50 dB gain)
Headroom:		> 18 dB
Power Requirement:		GROUND-REFERENCED 24 to 33 Vdc @ 50 mA

Industry Brands, Warehouse Prices!