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MP221 Microphone preamp

This product has been superseded by built in features in Ampetronic hearing loop drivers.

For more information please contact us on +44 (0) 1636 610062

Product Code:
MP221 – obsolete

  • Features
  • Specifications
  • Standards
  • Downloads
    • Switchable phantom power
    • Independent controls for all inputs
    • 5 year warranty
    • Power supply included
    • 2 Balanced microphone inputs
    • 1 Balanced/Unbalanced line input
    • 1 Stereo Unbalanced line input
    • 1 Balanced/Unbalanced line output
  • Balanced Microphone Inputs

    Connector XLR
    Gain (Factory setting) 66dB
    Gain switch (low) 46dB
    Input referred noise -124dBu (200Ω source)
    Input impedance > 5kΩ
    Phantom Power +12V

    Line Level Input 1 Unbalanced Stereo

    Connector Dual phono
    Gain 6dB
    Input Impedence 47k Ω

    Line-level Input 2 Balanced / Unbalanced

    Connector (1/4 inch) 6.3 mm jack socket
    Gain 6dB
    Input impedance 1MΩ each side, 2MΩ differential


    Connector (¼ inch) 6.3mm Jack socket
    Number 1 Balanced/Unbalanced
    Level 0dBu (nominal)
    Overload +16dBu Bal / +10 dBu Unbal
    Overload LED On front panel


    Gain Control 4 (1 per input) on front panel
    Phantom Global ON/OFF on rear panel
    Gain Boost Internally selectable per channel


    Width, Depth, Height 107 x 200 x 44mm
    Weight 0.65kg

    Power Supply

    Voltage, Current 12Vdc, 55mA (region specific power supply included)


    The unit can be rack mounted using the RM-1U rack tray, BPS-1U and BPL-1U blank plates.

  • The MP221 preamplifier is CE marked to all relevant safety and EMC standards

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