Features:

• Power switch (with LED indicator)
• Stereo coupler (with slave LED indicator). Each 165 is equipped with matched rms detectors for stereo-strapping operation without the signal-summing errors of conventional strapped compressors.
• Compression ratio: continuously variable, 1:1 - 20:1 and infinity
• Attack: continuously variable, 400 - 1 db/msec
• Release: continuously variable, 4k to 10 db/sec
• In manual mode, variable attack and release rates allow the 165A to be used as an ultra-fast or slower rms-detecting limiter.
• Auto attack/release (with LED indicator). In automatic mode, compressor attack and release times are determined by program material dynamics.
• Meter switching: input, output, gain change. Analog rms meter is switchable to read input or output levels or the amount of gain reduction over a 30dB range.
• System bypass
• Output gain: continuously variable, -20 to + 20dB
• Meter adjustment screw
• Separate detector input allows compression pre-emphasis and other effects.
• Active balanced input for hum and RF rejection.
• 24dBv input/output capability.

Specifications:

• Frequency Response: 20 Hz to 20 kHz +/- 0.5 dB
• THD: 0.2%, maximum compression, 1 kHz, 0 dBV
• Noise: - 90 dBV
• Maximum Input: + 24 dBV
• Maximum Output: + 23 dBV
• Input Impedance: 22k ohm differential, 11k ohm unbalanced
• Output Impedance: Low single ended, for driving 600 ohm or greater
• Gain: - 20 to + 20 dB
• Threshold Range: - 40 to + 20 dBV (Compressor), - 2 to + 24 dBV (PeakStop)
• Maximum Compression: Greater than 60 dB

Attack Times:

• Auto: 15 ms for 10 dB, 5 ms for 20 db, 3ms for 30dB;
• Manual: variable from 2.5 us to 1 ms per dB

Release Times:

• Auto: 8 ms for 1 dB, 80 ms for 10 dB, 400 ms for 50 dB; (125 dB/s rate);
• Manual: variable from 250 us to 100 ms per dB