ENCY1kHz0kHz16. Curves & Specificationsc o r e13MID EQ PLOT15LIMITER, MIN, MED, MAXEQ SHELFŸ ALL-TUBE preamplifier audio path using 1 x 12AX7WA for gain and 1 x 6922 White FollowerŸ Balanced Transformer Coupled XLR Microphone Input Impedance: 1250 OhmsŸ Balanced XLR Line Input Impedance: 10 kOhmsŸ Unbalanced 1/4" Direct Input Impedance: 10 Meg OhmŸ Hi-current drive Direct Output Impedance: 50 OhmsŸ Silent conductive plastic INPUT attenuatorŸ Compressor Maximum GAIN REDUCTION: 16 dBŸ Compressor ATTACK time:60ms slowest CCW, 30ms at 12:00, 5ms fastest CW for 6dB compressionŸ Compressor RELEASE time:1.5s slowest CCW, 1s at 12:00, 100ms fastest CW from 6dB compressionŸ Limiter ATTACK time: 115μsŸ Limiter RELEASE time:300 ms slowest CCW, 150 ms at 12:00, 2.3 ms fastest CWŸ Maximum Input Mic input (Low Gain Setting): -5 dBu or 435mV RMS @ 0.5% THDŸ Maximum Input Mic input (High Gain Setting): -25 dBu or 44mV RMS @ 0.5% THDŸ Maximum Input Line input (Low Gain Setting): +13 dBu or 3.5V RMS @ 0.5% THDŸ Maximum Input Line input (High Gain Setting): -8 dBu or 300mV RMS @ 0.5% THDŸ Maximum Input Direct input (Low Gain Setting): +24 dBu or 12V RMS @ 0.5% THDŸ Maximum Input Direct input (High Gain Setting): +17 dBu or 5.5V RMS @ 0.5% THDŸ Maximum Input Insert return: +20 dBu or 7.8V RMS @ 0.5% THDŸ Maximum Preamp Output (Insert Send): +35 dBu or 43V RMS @ 0.5% THDŸ Maximum Preamp Output (Insert Send): +22 dBu into 600 OhmsŸ Maximum Main Output: +20 dBuŸ Insert Send output impedance: 50 OhmsŸ Insert Return input impedance: 13 kOhmsŸ Main Output Impedance: 50 OhmsŸ Direct Output Headroom (referenced to +4 dBv): 31 dBŸ Main Output Headroom (referenced to +4 dBv): 16 dBŸ Dynamic Range: >90 dBŸ Frequency Response: 10 Hz to 20 kHz ±0.5 dBŸ Large LED illuminated VU METERŸ Meters switch to read Direct Output (1) from preamp, Output (2) from Main Out,or Compressor Gain ReductionŸ THD & Noise (1kHz @ +4 dBm): 0.02% at Low Gain settingŸ Noise Floor (Gain set to minimum): -70 dB wideband typicalŸ Gain via Microphone Input: 40 or 60 dBŸ Gain via Line Input: 20 or 40dBŸ Maximum Gain of EQ & Limiter section: 10 dBŸ AUTOMUTE warmup delay: 30 secondsŸ Power consumption: 35 WattsŸ Operating mains voltage: 90 to 254 VAC (internal universal supply)Ÿ Mains Voltage Frequency: 50~60HzŸ Dimensions: 19" x 3 ½" x 7" (occupies 2u)Ÿ Unit weight: 8.3 lbs.Ÿ Shipping weight: 11.5 lbs.