The Zen is unique. It's construction is based on the legendary compressors used at Abbey Road Studios. The audio circuit is based on 14 bi-polar transistors in each channel. The compression is achieved by 8 hand-matched Zener diodes biased by a perfect feedback circuit.
Basic Features:
Compression type Zener diodes
Stereo LinkYes
HPF60, 90, 120, 240Hz
Hard wire bypassYes
All stepped manipulators Yes
Input & Output
Input Impedance (balanced)10k Ohm
Output Impedance (balanced) 75 Ohm
Audio transformers Yes, IGS Custom, on inputs and outputs
Levels
Operating Level+4 dBu
Dynamic Range >100dB
Noise Level -99dBu
Max. gain36dB
Max Gain Reduction -35dB
Time constants
Attack 8 - 100 ms, x 4 switchable
Ratio Variable, depends on the input settings, plus Limiter
Release10 - 2000 ms, x 4 switchable
Bandwidth
Frequency response 20 Hz - 20 kHz, +/- 0.1dB
Distortion (@ 20 Hz - 20 kHz)
Signal to Noise Ratio >90dB
THD+N >86dB
IMD (SMPTE) >90dB
Crosstalk80dB @ 1kHz
Front Panel
VU Meters Yes, GR in dB's, left & right
Power
Voltage Selectable 115/230 VAC
Power consumption <30 VAC
Power supply Linear, internal
Packing box
Dimensions19" unit
Shipping weight 9 kg / 5 lbs
