Manley MFRC FORCE Four Channel Microphone Preamplifier
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Manley MFRC FORCE Four-Channel Microphone Preamplifier
The Manley MFRC FORCE is a premier high-end microphone preamplifier meticulously hand-crafted in California, designed for audio professionals seeking ultimate sonic performance and reliability. Featuring four channels of real high-voltage vacuum tube microphone preamps extracted from the acclaimed Manley CORE®, the FORCE delivers full Class-A amplification with robust 300V DC power rails, ensuring pristine sound with exceptional headroom. Its ergonomic front panel offers silky rotary potentiometers, positive latching switches, gold-plated XLR mic inputs, and direct 1/4" Hi-Z guitar/keyboard inputs, all housed within an exquisitely beautiful chassis optimized for studio use and international voltage compatibility.
The FORCE preamplifier incorporates the legendary MANLEY IRON® input transformer, a sophisticated power supply designed by audio experts led by Bruno Putzeys, and flexible gain settings from 40dB to 50dB plus internal jumpers for extra gain. Additional features include phase reverse, a 120Hz high-pass filter per channel, and seven-segment LED metering for precise level monitoring. Whether used for vocal recording, instrument amplification, or studio mixing, the Manley MFRC FORCE provides a compelling combination of sonic richness, reliability, and rugged American craftsmanship.
Key Features
- Four Channels of high-voltage vacuum tube microphone preamplifiers derived from the Manley CORE® design
- MANLEY IRON® Transformer gold-plated, balanced microphone inputs for excellent signal integrity
- Hi-Z Direct Inputs (1/4" jacks) for instrument and line-level sources with 10 megOhm impedance
- Flexible Gain Control with front panel switches for 40dB or 50dB gain plus internal jumper option for an additional 10dB
- Pure Class-A Amplification with 12AX7 dual triode tubes for smooth and natural sound
- MANLEY POWER® Supply with 300V DC rails, low noise, and universal power input for worldwide use
- Phase Reverse and High-Pass Filter (120Hz) per channel for tonal shaping
- Seven-segment LED Meters for each channel with precise visible audio level feedback
- Ergonomic Controls including rotary potentiometers and positive latching switches for reliable operation
- Rugged Chassis designed and handcrafted in Southern California for durability and style
Specifications
- 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: 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.
Package Content
- Manley MFRC FORCE Unit: Four-channel microphone preamplifier
- Power Cable: Universal voltage power cord
- User Manual: Detailed operation and maintenance guide
- Warranty Card: Manufacturer warranty documentation
