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Manley FORCE Four Channel Vacuum Tube Microphone Preamplifier

Manley FORCE Four Channel Vacuum Tube Microphone Preamplifier

Manley

Description

From America’s premier high-end studio gear manufacturer, the Manley FORCE offers four channels of vacuum tube microphone preamplifiers extracted from the hugely popular and award winning Manley CORE, housed in an exquisitely gorgeous chassis, meticulously hand-crafted, purposefully and efficiently in southern California.

Your relationship with the FORCE begins with the ergonomic facia through its thoughtfully organized controls, silky and bulletproof rotary potentiometers, positive latching feature switches and convenient Direct Input 1/4" jacks.

Seven-way LED metering for each channel provides instant visible feedback for audio levels, which are enhanced with a double-inlay CNC-milled accent. This is investment-grade audio equipment that you will be as proud to showcase in your studio as Manely was to handcraft it in Southern California.

Your microphone signals enter through gold-plated XLR connectors straight into Manley IRON mic input transformers. Your line level sources or instrument level guitars and keyboards come in via the front panel 1/4" Hi-Z 10 Mohm jacks before hitting the input level control which also acts as a Variable Input Pad.

Phase Reverse and a 120Hz High Pass filter can be invoked here in the circuit and then into the 12AX7 dual triode amplifying stage operating in pure Class A, of course. The amount of GAIN for each channel can be selected as 40dB to 60dB via the front panel switches. The output stage "can drive a truck" as we like to brag delivering up to +35dBu.

You will not get near this sonic performance with any 500-series design. This is full FORCE audio excellence from Manley Labs, proudly built by an American workforce.
Manley FORCE 4-Channel Vacuum Tube Microphone PreAmp
Manley FORCE 4-Channel Vacuum Tube Microphone PreAmp
Manley FORCE 4-Channel Vacuum Tube Microphone PreAmp

Features

  • 7-segment LED peak metering
  • Selectable Gain, LOW vs. HIGH
  • 120Hz High Pass Filter switch
  • Phase Invert switch
  • 48V phantom power switch
  • Input Attenuator (Variable Pad)
  • Silent Input Level Control (Variable Input Pad)
  • 1/4" direct input
  • Handcrafted in the USA
  • Built like a tank
  • Designed to endure

Specs

  • 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
  • Maximum Input Mic input (Low Gain Setting): -5 dBu or 435mV RMS @ 0.5% THD
  • Maximum Input Mic input (High Gain Setting): -25 dBu or 44mV RMS @ 0.5% THD
  • Maximum Input Direct input (Low Gain Setting): +24 dBu or 12V RMS @ 0.5% THD
  • Maximum Input Direct input (High Gain Setting): +17 dBu or 5.5V RMS @ 0.5% THD
  • Maximum Output (1kHz Sine, into 100 kOhm load, 0.1% THD+N: +35 dBu
  • Maximum Output (1kHz Sine, into 100 kOhm load, 0.1% THD+N: 43V RMS
  • Maximum Output (1kHz Sine, into 600 Ohms load, 0.1% THD+N): +22 dBm
  • 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: 20Hz to 20kHz -0.1dB, +0.3dB
  • Gain via Microphone Input: 40 LOW or 50dB HI GAIN (60dB available via internal jumper)
  • Gain via Line Input: 20dB 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 lb.

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