The GQ600 is a precision dual channel 1/3rd octave graphic EQ, providing up to a 10dB boost or cut at 30 key frequency points between 25Hz and 25kHz. An optimized filter design is used to provide improved interpolation and narrow bandwidth performance, while high-quality 45mm long-throw sliders are used for increased resolution. The low-distortion circuitry and flat noise response of better than -98dBm ensure near silent performance and reliability in either install or touring systems.

The GQ600 also features a shelving High Frequency Trim section allowing for fast adjustments of overall High Frequency response and a sweepable High-Pass Filter with turnover frequencies at 10Hz and 150Hz. A fixed-frequency Low Pass Filter (18dB/octave) is also included for increased protection against High Frequency driver overload.

Audio Inputs and Outputs on the GQ600 include both balanced lockable XLR-type and "quick-wire" Klippon connectors, with optional transformer balancing available for both inputs and outputs. Each channel also offers a Gain control and an EQ In/Out switch. For increased dependability, the unit includes a relay fail-safe bypass with turn-on delay and peak level indicator LED’s.