Radio Design Labs FP-MP1
Microphone Preamplifier


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List Price: $303.37
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Recommended Accessories
Radio Design Labs' FP-MP1 is the ideal choice in most applications requiring a preamp. RDL’s exclusive low noise discrete circuitry produces studio quality low noise performance in an economical preamplifier. The XLR and plug-in terminal block connections make the FP-MP1 perfect for both rack mounted hardwired installations and remote use with standard audio cables. A front-panel switch permits the installer to direct phantom voltage to the input connectors. This 3-position switch provides 24V, 12V or PHANTOM OFF. Two switches select the input gain range thereby permitting the connection of standard or high output level microphones.

NOTE: Radio Design Labs' PS-24AS power supply is NOT included but is required in order to power this product.  Please see the "Accessories" tab or click here for more information on the PS-24AS power supply.


  • Professional Studio-Quality Low-Noise Performance
  • Switchable Internal Phantom Voltage
  • XLR and Terminal Block Connections
  • Selectable Input Level Ranges
  • Adjustable Gain with Dual-LED VU Metering
  • Ultra-Compact All Metal Construction
  • Convenience of RDL® FLAT-PAKs™


  • Input Impedance: 3 kW (balanced)
  • Gain Range (2):
    • MIN: 19 dB to 38 dB (switch selectable)
    • LOW: 26 dB to 45 dB (switch selectable)
    • MED: 36 dB to 55 dB (switch selectable)
    • HIGH: 46 dB to 65 dB (switch selectable)
  • Input Clipping Level: +4 dBu
  • Headroom: 20 dB (above +4 dBu)
  • Low-Cut Filter: 80 Hz, 6 dB/Octave (switch selectable)
  • Phantom Voltages: 12 V, 24 V (switch selectable)
  • Phantom Voltage / Buildout Standard: IEC 1938: 1996-12
  • CMRR: > 60 dB (100 Hz to 5 kHz)
  • Frequency Response: 20 Hz to 20 kHz (± 0.2 dB)
  • THD + N: < 0.1%
  • IMD: < 0.1%
  • Noise:
    • < -70 dB (below +4 dBu @ 60 dB gain – wideband)
    • < -72 dB (below +4 dBu @ 60 dB gain – A weighted)
    • < -80 dB (below +4 dBu @ 50 dB gain – wideband)
  • Equivalent Input Noise: < -130 dB (gain + residual noise below +4 dBu)
  • Connector type: XLR female (input); XLR male (output) 5 position plug-in terminal block (input and output)
  • Audio Indicators (2):
    • Red LED: Output level > +4 dBu
    • Green LED: -10 to +4 dBu (variable intensity)
  • Power Requirement: Ground-Referenced 24 Vdc @ 100 mA
  • Dimensions: 1.42" H x 3.25" W x 4.64" L (3.61 x 8.26 x 11.79 cm)
24 VDC 500mA Switching Power SupplyRadio Design Labs PS-24AS 24 VDC 500mA Switching Power Supply

Radio Design Labs' PS-24AS is a 24 Vdc switching power supply with a North American AC plug.  500 mA, dc plug.Specifications: Input: 100 to 240 VACOutput: 24 Vdc, 500 mA (UL, CSA)Dimensions: 1.65" x 2.75" x 1.45" (4.2 x 7 x 3.7 ...

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Pole Mount Tray for RDL Module Radio Design Labs PM-1T Pole Mount Tray for RDL Module

The PM-1T is a tray that mounts above a projector using a standard (1.5" I.D.) round projector pole or any smaller round or rectangular pole. The tray accommodates up to two FP-PA20 Audio Power Amplifiers (for stereo operation) and two ...

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Our Price:$80.35List Price: $107.48You save 25%!

Din Rail Mounting BracketRadio Design Labs DRA-35F Din Rail Mounting Bracket

The DRA-35F is a DIN rail mounting bracket that provides positive mounting for any RDL FLAT-PAK™ module. DIN rail mounting is ideal in locations subject to vibration, in confined spaces or where traditional rack mounting is not desired. ...

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Our Price:$10.34List Price: $12.21You save 15%!

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