A dual channel digital equaliser occupying 2U of rack space. Each channel has a 31 band graphic equaliser, 12 band parametric equaliser, four configurable filters and T DEQ dynamic filters that allows the user to set in advance the gain of a parametric EQ section that will occur at specific signal levels. Full time metering is provided for inputs, outputs and T DEQ functions, and overall the control surface is simple and intuitive to use. Below the main display is a dual touch strip which allows one step access to various functions, obviating the need to use separate rotary encoders. The DN9340E will also link to DN6000 to provide auto EQ functions if required. Audio inputs and outputs are analogue and AES/EBU digital, with enough signal processing inside for all the functions to be used simultaneously.