Fairchild 660; 1-channel Vari-Mu compressor; faithful reproduction; mono 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 constantly high signal levels; controls for threshold and input gain; VU meter display; hand-wired point-to-point construction; specially developed transformers; built-in tubes: 4x 6386, 1x 12AX7, 1x GZ34, 1x 12BH7, 1x 6BL7, 2x 6V6GT, 1x E80F, 1x 5651; 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 254 x 229; Weight: 18.3 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.
