Input:10 kΩ Balanced (may be connected unbalanced)Input Signal Range:-10 to +4 dBu, adjustable (for 6 dB gain reduction); +22 dBu maximumOutput:150 Ω Balanced (may be connected unbalanced)Output Signal Range:OFF to +8 dBu, adjustableFrequency Response:10 Hz to 20 kHz (+/- 0.2 dB) over full compression rangeNoise below +4 dBu output:<-78 dB (unweighted; +4 dBu input/output)Total Harmonic Distortion:<0.05% @ 1 kHz below compression threshold; <0.1% @ 1 kHz with 3 dB gain reduction; <0.15% @ 1 kHz with 6 dB gain reductionCMRR: 60dB (50 to 100 Hz)Attack Time:Averaging Compressor: 500 ms (+4 dBu input); Fast Compression: <10 ms (+20 dBu input); Peak Limiting: InstantaneousRelease Time:Automatically adjusting up to 500 msCompression Ratio:Automatically adjusting 1.5:1 to 10: 1Peak Limiter:INF:1Interconnection:Stereo COUPLE interconnection providedIndicators (2):Yellow LED for NORMAL Compression, Red LED for HEAVY CompressionPower Requirement:24 to 33 Vdc @ 50 mA, SupplyFlexAmbient Operating Environment:0 C to 55 C