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Review Summary
2021-05-28T08:42:12
Great Pre amp. I love the tubes. a completely different vibe
BLAINE J.
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4x 12AX7WA dual triodes
Balanced Transformer Coupled XLR: 1250Ohms
10MOhm
Mic input (Low Gain Setting): -5dBu or 435mV RMS at 0.5% THD
Mic input (High Gain Setting): -25dBu or 44mV RMS at 0.5% THD
Direct input (Low Gain Setting): +24dBu or 12V RMS at 0.5% THD
Direct input (High Gain Setting): +17dBu or 5.5V RMS at 0.5% THD
1kHz Sine, into 100kOhm load, 0.1% THD+N: +35dBu
1kHz Sine, into 100kOhm load, 0.1% THD+N: 43V RMS
1kHz Sine, into 600Ohms load, 0.1% THD+N): +22dBm
Hi-current WFDRIVE: 50Ohms
31dB (referenced to +4 dBu)
118dB at LOW GAIN, 100dB at HIGH GAIN
At Low Gain setting (1Khz at +4dBu BW 22Hz-22KHz): 0.004%
At Hi Gain setting (1Khz at +4dBu BW 22Hz-22KHz): 0.04%
- 85dB at LOW GAIN, -66dB at HIGH GAIN
87dB at LOW GAIN, 68dB at HIGH GAIN (Ref. to +4dBu)
-129dB with 150 Ohm source impedance at LOW GAIN (22-22kHz BW, A WGT)
20Hz to 20kHz -0.1dB, +0.3dB
40 LOW or 50dB HI GAIN (60dB available via internal jumper)
20 or 30dB (40dB available via internal jumper)
-22dBu (Output Level)
+24dBu (Output Level)
30 seconds
36Watts
90 to 254VAC (internal universal supply)
50 to 60Hz
2U
19 x 3.5 x 7" / 482.60 x 88.90 x 177.80mm
8.6lbs / 3.90kg
890833001882
Sounds Greatt
By BLAINE J.
Great Pre amp. I love the tubes. a completely different vibe
You can experience the epitome of high-quality audio with the Force 4-Channel Vacuum Tube Microphone Preamplifier, a professional-grade product from Manley Labs, a leading name in the high-end studio gear industry. This innovative preamplifier harnesses the power of vacuum tube technology to deliver a warm, rich sound that's perfect for both live performances and recording sessions.
This reliable and durable preamplifier is a testament to Manley Labs' commitment to superior craftsmanship. It features an ergonomic design with thoughtfully organized controls, including silky, bulletproof rotary potentiometers and positive latching feature switches. The convenient Direct Input 1/4" jacks and seven-way LED metering for each channel provide instant visible feedback for audio levels, enhanced with a double-inlay CNC-milled accent.
Your microphone signals enter through gold-plated XLR connectors, straight into the Manley IRON Mic input transformer. Line level or instrument level guitars and keyboards can be connected via the front panel 1/4" Hi-Z 10 megOhm jacks. The input level control also acts as a Variable Input Pad, and Phase Reverse and 120Hz High Pass filters can be invoked in the circuit. The 12Ax7 dual triode amplifying stage operates in pure Class A, offering selectable GAIN of 40dB or 50dB via the front panel switches, with an additional 10dB of gain available via internal jumpers.
The Force 4-Channel Vacuum Tube Microphone Preamplifier is powered by an innovative power supply designed specifically for Manley Labs, High Voltage vacuum tubes, and audio. This power supply provides 300 Volt DC rails to run the vacuum tubes, beefy 6 Volt lines to power them up, along with several other voltage rails for the phantom power and various solid-state control voltages. This results in high headroom and superior sonic performance that you won't find in any 500-series design.
This preamplifier is a testament to Manley Labs' commitment to delivering high-quality, professional-grade audio equipment that's built to last. With its high number of channels, it's suitable for use in a variety of settings, from live performances to recording studios. Experience the difference with the Force 4-Channel Vacuum Tube Microphone Preamplifier.