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 level
• Controls for threshold and input gain
• VU meter indicator
• Hand-wired point-to-point construction
• Specially designed 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 ohms
• Input level: 0 dBm to +16 dBm
• Output level: +4 or +8 dBVU (+27 dBm clipping point)
• AmplificationL: +7 dB
• Frequency response: 40 Hz – 15 kHz ±1 dB
• Noise level: –70 dB below +4 dBm
• Intermodulation distortion: <1%
• Compression ratio: adjustable from 1:2 to 1:30
• Dimensions (W x H x D): 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 use. Detailed instructions are included with the device. In case of doubt, it is recommended that installation be carried out by a qualified professional.