Sound Techniques ZR7064CS Mic Pre/EQ

Sound Techniques ZR7064CS Pre/EQ Introducing the all new ZR7064CS Mic Pre/EQ from Sound Techniques, Ltd. The ZR7064CS is a 2RU unit with a standard 19″ width. The circuit topology is identical to the Sound Techniques ZR7064 console input module including the revered “Z Match” impedance selector with up to 60dB of gain as was standard on all vintage Sound Techniques recording consoles. Additionally, the ZR7064CS includes a front panel 1/4″ DI gold plated input.

Features

• 48V: Activates phantom power for the mic input. It is a latching switch. Up is phantom off, down is phantom on with the LED lit.
• C/O: Changes over from Mic input to Line input and vice-versa. It is a latching switch; up is Mic with the red LED lit, down is Line with the green LED lit. Mic & Line inputs are on XLR connectors on the rear panel. The line input is also available on the DB25 connector.
• DI: Selects the Direct Input (instrument input) on the front-panel jack socket. DI works in conjunction with the Mic input circuitry and facilities, however, it automatically sets parameters that provide the best electrical matching to the instrument signal characteristics. DI disables operation of the Z-Match switch, setting the circuitry to 200-Ohms at 0dB. Independently of the C/O switch, DI forces the Mic input to be active so as to allow the front panel jack socket to feed the mic input transformer and amplifier. A unique feature of the DI input is that it is balanced; generally instrument inputs are unbalanced.
• Polarity: Swaps the signal polarity of the selected input.
• SIG LED: This LED responds to the presence of a signal at the unit’s input. It illuminates when a level of -20dBu is present at the insert send.
• Z-Match: Works as-per the ZR7064 channel, but with the noted exceptions for the DI input as detailed above.
• Mic / Line Gain: Works as-per the ZR7064 channel.
• PREQ: Switches the Pre-EQ insert return into the signal path. The insert send is always active. It is a transformer driven output.
• EQ: The equalizer is as per the ZR7064 with LF bell response.