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Radio Design Labs RM-MP12A Audio Monitor Panel - 12 Line or Speaker Inputs

  • Lifetime Tech Support
  • Best Seller!
  • Q & A
  • Product Highlights
  • 12 Audio Inputs
  • Selectable Operating Mode
  • LED Above Each Button
  • VU Ballistic LEDs
  • Front Panel Meter Display
  • Front-Panel Speaker & Headphone Jack
  • Front-Panel VCA Control
  • Internal Power Amp & Speaker
  • Terminal Block I/O
Retail Price: $1055.16 Instant Savings: -$288.00 You Pay: $767.16 QTY
  • Lifetime Tech Support
  • Best Seller!
  • Q & A
  • Product Highlights
  • 12 Audio Inputs
  • Selectable Operating Mode
  • LED Above Each Button
  • VU Ballistic LEDs
  • Front Panel Meter Display
  • Front-Panel Speaker & Headphone Jack
  • Front-Panel VCA Control
  • Internal Power Amp & Speaker
  • Terminal Block I/O

Audio Monitor Panel - 12 Individually Selectable Audio Inputs


Each RM-MP12 input may be individually calibrated for unbalanced consumer, balanced professional, 8 Ohm speaker line or constant voltage speaker lines. There is a variable intensity LED on the front panel to show audio presence for each input. If the RM-MP12 is set to the interlocking operating mode, front-panel pushbuttons select one of the twelve inputs to feed the calibrated meter, front-panel speaker (or external speaker if connected) and headphone jack. In the mixing mode, the buttons allow the use to mix multiple sources. The front-panel volume knob controls the audio level of the front-panel headphone jack, front-panel speaker, external speaker output and variable line level (+4 dBu) rear-panel output. A separate fixed line-level output is provided.


  • Twelve Individually Selectable Audio Inputs
  • Selectable Operating MODE Provides Interlocking Source Selection or Mixing Multiple Sources
  • LED Above Each Button to Show Selected Source
  • VU Ballistic LED Above the Button for Each Input
  • Calibrated Front-Panel Meter Display
  • Front-Panel Speaker and Headphone Jack
  • Front-Panel VCA Control for Headphone and Speaker Output Levels
  • Internal 4.5 W RMS Power Amplifier and Speaker
  • Audio Inputs and Outputs on Detachable Terminal Blocks


  • Inputs (12): +4 dBu, 25 V, 70.7 V, 100 V (set by rear-panel switches)
  • Input Level: -11 dBu to +9 dBu (+4 dBu input) 25 V, 70.7 V, 100 V (calibrated with gain trim set fully counter-clockwise)
  • Headroom: > 18 dB (above calibrated input level)
  • Gain: 0 dB to 20 dB (Adjustable for speaker-level input, 25-turn trim potentiometer)
  • -5 dB to 15 dB (+4 dBu input)
  • Frequency Response: 10 Hz to 20 kHz (+/-0.25 dB)
  • THD+N: < 0.010% (20 Hz to 20 kHz)
  • Intermodulation Distortion: < 0.025% (20 Hz to 20 kHz)
  • Channel to Channel Crosstalk: < -80dB (10Hz to 20 kHz)
  • Residual Noise: < -80 dB (Channel ON; referred to +4 dBu)
  • OFF Attenuation: > 80 dB (10 Hz to 20 kHz)
  • Indicators per Channel (2): Red channel active LED above button; Variable intensity audio level LED for each input (minimum intensity at -15 dB, maximum intensity at 0 dB)
  • CMRR: > 75 dB (50 to 120 Hz)
  • Outputs (4): 150 Ohms, +4 dBu fixed level (balanced or unbalanced via plug-in terminal block)
  • 150 Ohms, +4 dBu variable level (balanced, controlled by front-panel volume knob)
  • 4.5 W RMS external speaker connection (use of external speaker disconnects internal speaker) 100 mW 1/4-inch stereo headphone jack
  • Power Requirement: GROUND-REFERENCED, 24 Vdc @ 700 mA
  • Mounting: Standard 19" Rack-mount; 1 Rack Unit (RU)
  • Dimensions:
  • Height: 1.75 in 4.40 cm
  • Depth: 5.35 in 13.60 cm
  • Ambient Operating Environment: 0 C to 55 C


Q & A

Radio Design Labs
MFR Part Number
Product Category
Audio Routing & Distribution
Unit of Measure
Shipping Weight
4.55 lbs.
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