The DN9340E Helix series equalizer from Klark Teknik is a two-channel digital equalizer packaged in a 2RU, 19" rack-mount housing. The two channels can be set-up and controlled independently as two separate mono equalizers, or linked for stereo operation.

The unit has complete front panel control, which allows it to be used, both as a stand-alone unit, or as a master controller in a larger set-up that combines it with single, or multiple DN9344E slave units. The DN9340E can also function as a slave unit when working with remote PC or mixing console control.

In addition to rotary controls and a large, bright LCD display, a two-part, front-panel touch strip is used to select individual faders or filters, and can also be used to adjust gain settings. Pressing either part briefly selects a particular filter or fader.

One of the many great features of the EQ is the ability to have available simultaneously, both graphic and parametric equalization. For example, this allows the engineer to setup a sound check for a particular space, using the parametric mode, with its maximum flexibility. Once the show starts, the engineer can flip to graphic mode, which now starts off from a "flat" baseline. Any problems that need fast attention during the show can now be addressed using the speed of operation of graphic EQ.

Another aspect of the Helix system is space efficiency, allowing exceptionally compact EQ systems to be assembled. For example, one DN9340E and six DN9344E units would provide twenty-six channels of EQ, each with graphic, parametric and dynamic EQ, plus flexible filters, all in just an eight rack-space enclosure.