ALL YOU CAN EXPECT FROM AN INSERT

Dedicated level BOOST, DRY/WET Ratio control, MID/SIDE Stereo conversion, individual I/O MONITORING.

Impedance Select switch (Z) on Instert Return.

STEREO BASE CONTROL

Classical circuitry based on MID/SIDE stereo technique, adapted to real-world applications

ADAPTABLE

Compatibility to standard 500 frames by optional 1-slot front panel providing stereo insert I/Os. Special rear panel covering all connectors when operated in Zähl Rack.

• stereo design for mix & mastering as well as voices & instruments
• highly musical design
• intuitive, user-friendly, self-explaining layout
• lowest noise and distortion signal paths built with highest quality components
• no microprocessor, no clock pulses, sequential logic only
• individual power stabilization on each module, no switched power circuitry
• number of I/Os exceeds API 500 standard, connector extension included:
  - upgrade to special rear panel for Zähl Rack 500 series with additional XLR Insert I/Os or
  - additional 1 slot front panel with 4 XLR Insert I/Os as adaption to standard 500 series rack
• all other specs compatible with API 500 series specs, basic unit occupying two slots

• electronically balanced, max. level > +26dBu
• INPUT GAIN range +/- 10dB, L/R BALANCE range +/- 2,5dB
• GAIN and BALANCE with trimmed zero position
• SIGNAL LED (green) level present, individual Left/Right
• O/L LED (red) overload warning, individual Left/Right

• SEND BOOST control with up to 20dB gain at INSERT send
• RETURN RATIO crossfader for DRY/WET mixing at INSERT return for parallel compressing, EQing etc.
• Z-Switch - impedance selection for Insert Returns. Optimum sound results by impedance matching, e.g. when inserting vintage equipment.
• switchable MID/SIDE STEREO conversion on INSERT SEND/RETURN allowing different processing of MID and SIDE signals – using mono EQs, compressors, etc.
• comprehensive MONITORING controls for L and R, or MID and SIDE signals at insert SEND and RETURN points
• ON/OFF switch bypasses all INSERT functions

• Circuitry based on MID/SIDE technique provides continuously variable adjustment starting from center position (STEREO): 
  - Narrow STEREO BASE by turning counterclockwise towards MONO.
  - Widen STEREO BASE by turning clockwise towards DIFFERENTIAL signal.
• Use CONSTANT MID option to “soften” the effect when turning clockwise to DIFFERENTIAL.
• ON/OFF switch bypasses STEREO BASE stage

• electronically balanced, max. level > +26dBu
• OUTPUT GAIN range +/- 10dB, L/R BALANCE range +/- 2,5dB
• GAIN and BALANCE with trimmed zero position
• SIGNAL LED (green) level present, individual Left/Right, also monitoring INSERT RETURN
• O/L LED (red) overload warning, individual Left/Right, also monitoring INSERT RETURN
• Overall BYPASS, also bridging I/O GAIN stages