Nominal Input Level:-10 or -4 dBv Input Impedance:1.8M ohms Bandwidth:+0 / -3 dB:20 ? 20k Hz Gain Range:0 ? 15 dB (makeup) Compression Ratio:min / max:1:1 -5:1 Sensitivity Range:(Threshold):-25 ? +6 dB Attack Time (80%):<10 ms Release Time (80%):typ. 100 ms Dimensions (L x W x H):67 x 115 x 48 mm ( 2.6\” x 4.5\” x 1.9\” ) Weight:315g (0.7 lb.) Bypass:True Bypass (Relay type Switching) Power Requirements:9V ? 18V DC Regulated, DC 45 mA max