• precision, high-resolution recording and mixing
• video post-production
• film transfer
• disk-based recording

The architecture permits a maximum of 4 main and 4 aux busses. Each OUTPUT module feeds 2 main and 2 auxiliary busses as well as providing accurate metering, switchable from either source. The meters are Peak and RMS, and can be internally switched for dot or bar mode.

The INPUT module accepts XLR line level inputs from -20 to +4dB (25 dB of detented input gain). It allows panning between 2 pairs of 4 main busses and separate mixing (with pre/post switches) to 4 auxiliary busses. There are in-place solo and muting facilities and a rotary channel gain control. A front panel insert switch actuates the rear INSERT I/O patch ponts (on XLR). There is also a direct-out XLR connector. Unused op-amp stages are removed from the signal path if not used. Even the panning circuit op-amps are taken in and out of circuit depending on the pan-pot push-pull in-out position.

Mixing level is +4dBv at 5k ohms, balanced. Multiple racks can be chained to utilize common OUTPUT modules. The self noise of multiple-rack systems is very close to the physical minimum. For instance, the noise of a 96-input system is on the order of the noise floor of a high-performance 16-bit digital system.

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All modules make use of GML-designed potentiometers. All are of a multi-ink, conductive plastic, precision laser-trimmed design. Channel gain, auxiliary, and master controls achieve a nearly true logarithmic taper from -40dB to +10dB. The pan pot achieves a precision sine/cosine taper without "slugging." To further reduce distortion, no pot is loaded with less than 10 times its nominal impedence.

Product Highlights: All modules consist entirely of discrete-transistor circuitry. All coupling is DC. No tantalum or electrolytic capacitors within the audio topology. All XLR connectors are gold over nickel.