Fairchild 670; 2-channel Vari-Mu compressor; faithful reproduction; dual mono and stereo operation; six selectable time constants for attack and release: Position 1: 0.2 ms / 0.3 sec, Position 2: 0.2 ms / 0.8 sec, Position 3: 0.4 ms / 2 sec, Position 4: 0.4 ms / 5 sec, Position 5: 0.4 ms / 0.2 sec for single peaks, 10 sec for multiple peaks, Position 6: 0.2 ms / 0.3 sec for single peaks, 10 sec for multiple peaks, 25 sec for constant high signal level; controls for threshold and input gain; VU meter display; hand-wired point-to-point construction; specially developed transformers; built-in tubes: 8x 6386, 2x 12AX7, 4x 6973, 2x 12BH7, 1x E80F or (1x EF806), 1x 5651, 1x EL34, 1x GZ34; input and output impedance: 600 O; input level: 0 dBm to +16 dBm; output level: +4 or +8 dBVU (+27 dBm clipping point); Gain: +7 dB; Frequency response: 40 Hz – 15 kHz ±1 dB; Noise level: –70 dB below +4 dBm; Intermodulation distortion: <1 %; Compression ratio: 1:2 to 1:30 adjustable; Dimensions (WHD): 482 x 359 x 229 mm; Weight: 24.3 kg Note: All tubes have been calibrated at the factory and must be installed correctly by the user before commissioning. Detailed instructions are included with the device. If in doubt, it is recommended that installation be carried out by a qualified specialist.
