The Undertone Audio UnFairchild 670M II Compressor is a faithful recreation of the Famed and Coveted Fairchild Variable-Mu compressor, with added functions and features that not only brings this classic to an attainable level, but adds significantly more untility.
The Undertone Audio UnFairchild 670M II Compressor revives a long loved classic. The Fairchild circuit could be one of the most coveted and time tested compressors of all time. It has proven its extraordinary universal musicality for over 5 decades on countless genres of music. The beauty of its design is in its simplicity. The audio path, primarily consisting of only 2 transformers and 4 paralleled vari-mu tubes, can provide a gentle smoothing of levels or an explosive, energizing compression that will make any recording leap out of the speakers. The UTA UnFairchild is a painstaking recreation of the classic sound of this circuit.
There are a few limitations of the original Fairchild that Undertone set out to address. First, they have made careful adjustments to the circuitry that greatly improve the lifespan and reliability of the tubes. Additionally, they added a whole host of exciting new features that have never before been available on a Fairchild. The UnFairchild sports 6 original preset Time Constants and 4 variable Time Constants (attack and release), MS function, side chain processing, a true bypass, fine adjustment of left/right balance, user adjustable "DC Threshold", and "Feed-Back" vs. "Feed-Forward" functionality. With the UnFairchild, Undertone Audio made this extraordinary circuit flexible enough to handle pretty much every compression task on any style of music. When racking: Please leave a 1U rack space or at least a 5/8” space for an air gap ABOVE AND BELOW the UnFairchild.
Further features and functionality can be added to the UnFairchild, with the addition of the Undertone Audio UNFa-1 Accessory Box.
Undertone Audio UnFairchild 670M II Compressor Features
- Independent control over the Attack and Release
- User control over the DC O!set (functions similar to a ratio control)
- Access to processing or EQing the side chain signal
- Fine-trim adjustments for precise matching of the L/R balance
- True stereo linking
- Multiple M/S processing modes
- Options for feed-forward compression
- Calibration for meter level acuracy and channel compression matching
- True bypass
- Output metering
Undertone Audio UnFairchild 670M II Compressor Specifications
- Input Impedance: 2.5KΩ
- Output Impedance: 200Ω
- Output Level: +4dB @ 0Vu (+28dBm clipping point)
- Gain: 20dB (in 1dB steps)
- Frequency Response: 20hz - 20Khz (+0/-.5dB)
- Noise Level: -83dB
- Harmonic Distortion: Better 1% at +18dB
- Power Consumption: 150VA or W
- Weight: 37.4 lbs (46 lbs with packing materials)
- Dimensions (LxWxH): 12” x 19” x 14” (knobs add one inch to length)
- Rack Height: 8U (10U with ventilation space)
Undertone Audio UnFairchild 670M II Compressor Includes
- Undertone Audio UnFairchild 670M II Compressor
- IEC Power Cable
- Manufactuer Warranty
No review yet, Be first to Write a Review
Write a Review
Sign Up for exclusive sales and offers!