Manley FORCE Microphone Preamplifier

2,424.00 (including VAT @ 23%)

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Estimated delivery to you: 30th December 2016
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1 year warranty and 30 day money back guarantee included

1 year warranty and 30 day money back guarantee included

Once the product is delivered, you have 30 days to decide that you definitely want to keep it. If you decide it is not suitable for any reason, you can return it back to us for replacement or full refund, including standard delivery charges.

All Products are new unless stated, and include a minimum of one year warranty.

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Product Ref: 75869

  • 48V Phantom Power Switch
  • 120Hz High Pass Filter Switch
  • Phase Invert Switch
  • Input Attenuator (Variable Pad)
  • 7-Segment LED Peak Metering

Manley FORCE Microphone Preamplifier

The Manley FORCE Microphone Preamplifier is a professional microphone preamplifier to provide you with a large amount of headroom to work with a range of audio signals to ensure a high fidelity audio output. The FORCE also features a rack mountable design for ease of use within the studio. With a built in high-pass filter at 120 Hz, phase inversion, and phantom power, the Manley FORCE Microphone Preamplifier.

Product Ref: 75869

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Full Description

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Enhanced Clarity and Balance

The Manley FORCE Microphone Preamplifier provides gold-plated XLR connectors to allow you to plug your chosen microphone straight into the Manley Iron Mic input transformer to provide almost 18dB of gain and enhanced clarity and balance in your audio. The Manley FORCE input transformer laminations are primarily nickel, with the whole encased in a mu–metal can to eliminate hum pickup.

Instant Visible Feedback

The CNC machined faceplate features seven-way LED metering for each channel providing instant visible feedback for audio levels. Aside from the input selection, the Manley FORCE front panel features a switchable 120Hz high-pass filter, a variable input-level attenuator, and associated Hi/Low gain switch. In the Low position, with the level control fully clockwise, the mic input gives about 40dB and the line input 20dB of gain. Switching to Hi brings in an additional 20dB of gain.

Maximum Headroom

The Manley FORCE Microphone Preamplifier also makes use a 300 Volt DC power supply to offer you the maximum headroom possible. The universal mains input also accepts any frequency or voltage, allowing for use around the world. Despite the unit weight of 3.9KG, the FORCE Microphone Preamplifier is ideal for travel.


  • 48V Phantom power switch
  • 120Hz High Pass Filter switch
  • Phase Invert switch
  • Input Attenuator (Variable Pad)
  • GAIN Selectable Gain LOW vs HIGH
  • Silent Input Level Control (Variable Input Pad)
  • 7-Segment LED Peak Metering


  • Vacuum Tubes: 4 x 12AX7WA dual triodes
  • Balanced Transformer Coupled XLR Microphone Input Impedance: 1250 Ohms
  • Unbalanced 1/4" Direct Input Impedance: 10 Meg Ohm
  • Hi-current WFDRIVE Balanced Output Impedance: 50 Ohms
  • Output Headroom (referenced to +4 dBu): 31 dB
  • Dynamic Range: 118 dB @ LOW GAIN, 100 dB @ HI GAIN
  • THD & Noise (1Khz @ +4dBu BW 22Hz-22KHz): 0.004% at Low Gain setting
  • THD & Noise (1Khz @ +4dBu BW 22Hz-22KHz): 0.04% at Hi Gain setting
  • Noise Floor Micpre (A WGT): - 85dB @ LOW GAIN, -66dB @ HI GAIN
  • Signal to Noise Ratio (Ref. to +4dBu): 87dB @ LOW GAIN, 68dB @ HI GAIN
  • EIN (22-22kHz BW, A WGT): -129dB with 150 Ohm source impedance @ LO GAIN
  • Frequency Response: 20 Hz to 20 kHz -0.1dB, +0.3 dB
  • Gain via Microphone Input: 40 LOW or 50dB HI GAIN (60dB available via internal jumper)
  • Gain via Line Input: 20 or 30dB (40dB available via internal jumper)
  • Low Signal Green LED (Output Level): -22 dBu
  • High Signal Red LED (Output Level): +24 dBu
  • AUTOMUTE warmup delay: 30 seconds
  • Power consumption: 36 Watts
  • Operating mains voltage: 90 to 254 VAC (internal universal supply)
  • Mains Voltage Frequency: 50~60Hz
  • Dimensions: 19" x 3 1/2" x 7" (occupies 2u)
  • Unit weight: 8.6 lbs.
  • Shipping weight: 11.8 lbs.
  • Maximum Mic inputs:
    • Low Gain Setting: -5 dBu or 435mV RMS @ 0.5% THD
    • High Gain Setting: -25 dBu or 44mV RMS @ 0.5% THD
  • Maximum Direct inputs:
    • Low Gain Setting: +24 dBu or 12V RMS @ 0.5% THD
    • High Gain Setting: +17 dBu or 5.5V RMS @ 0.5% THD
  • Maximum Outputs:
    • 1kHz Sine, into 100 kOhm load, 0.1% THD+N: +35 dBu
    • 1kHz Sine, into 100 kOhm load, 0.1% THD+N: 43V RMS
    • 1kHz Sine, into 600 Ohms load, 0.1% THD+N): +22 dBm
Your order may be delivered with a plug adapter
If any electrical items in your order are supplied with a United Kingdom plug connection, a suitable plug conversion adapter will be included free of charge.