The Fairchild 670 compressor, with its classic design and timeless charm, has played a pivotal role in shaping the sound of modern music. Since its introduction in the 1950s, it has become a coveted piece of audio equipment, celebrated for its smooth, musical compression and rich harmonic saturation.
The Fairchild 670 compressor, with its classic design and timeless charm, has played a pivotal role in shaping the sound of modern music. Since its introduction in the 1950s, it has become a coveted piece of audio equipment, celebrated for its smooth, musical compression and rich harmonic saturation.
The FAIRCHILD 670 is a highly coveted vacuum tube compressor/limiter, now faithfully recreated to offer modern producers and audio engineers the classic sound of the original hardware. Unlike other 670 replicas, this new FAIRCHILD 670 stays true to the original design. It features the same tubes and custom-wound transformers, meticulously crafted to the original specifications. With its point-to-point soldering and turret-style construction, this is the only authentic recreation of the original 670, built and designed by Rein Narma at the request of Les Paul. We are thrilled to present this detailed and exacting recreation of the legendary FAIRCHILD 670—the legend reborn.
INPUT AND OUTPUT IMPEDANCE: 600Ω
RANGE OF INPUT LEVEL: 0 dBm to +16 dBm
OUTPUT LEVEL: +4 or +8 dBVU (+27 Bm clipping point)
GAIN: +7dB
FREQUENCY RESPONSE: 40Hz to 15kHz +/- 1dB
NOISE LEVEL: 70dB below +4dBm
LIMITING NOISES: Below audibility
INTERMODULATION DISTORTION:
Less than 1% at any level up to +18 dBm output (no limiting)
Less than 1% at dBm limiting +12dBm output
TIME CONSTANT ATTACK AND RELEASE TIMES:
(Note: Positions 5 and 6 release times are automatic function of program material)
Position 1 – .2ms/ 3 sec
Position 2 – .2 ms / .8 sec
Position 3 – .4 ms / 2 sec
Position 4 – .4 ms/ 5 sec my
Position 5 – .4 ms / .2 sec individual peaks, 10 sec multiple peaks
Position 6 – .2 ms / .3 sec individual peaks, 10 sec multiple peaks, 25 sec consistently high program levels
COMPRESSION RATIO: A function of the amount of limiting as well as setting of the two threshold controls which can be set to operate at ratios from 1:2 to 1:30
POWER REQUIREMENTS: 120 or 240 volts, 60 cycles AC, 3 amps.
INSTALLED TUBES: 8x 6386, 2x 12AX7, 4x 6973, 2x 12BH7, 1x E80F or (1xEF806), 1x 5651, 1x EL34, 1x GZ34
