Used Klark Teknik DN9340 Helix Dual Channel Digital EQ
Used Klark Teknik DN9340 Helix Dual Channel Digital EQ is a 2RU all-digital equalisation unit combining a five-mode 31-band graphic EQ, twelve bands of full parametric EQ, configurable filters and threshold-sensitive dynamic EQ per channel. Available second-hand from professional audio facilities worldwide, this is a capable and flexible processing tool. Scroll down to see the current used DN9340 Helix listings available now.
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Klark Teknik DN9340 Helix Dual Channel Digital EQ specifications
| Brand | Klark Teknik |
| Segment | Audio |
About the Klark Teknik DN9340 Helix Dual Channel Digital EQ
The Klark Teknik DN9340 Helix is a dual channel, 2RU all-digital EQ unit offering a five-mode 31-band graphic EQ, twelve bands of full parametric EQ, four configurable filters (HPF, LPF, hi-shelf, lo-shelf and notch) and two bands of true dynamic EQ (T-DEQ) per channel. All sections, including the graphic EQ, parametric EQ, filters and dynamic EQ, can operate simultaneously. The graphic EQ section offers Proportional, Constant and Symmetrical-Q characteristics, plus emulations of the classic Klark Teknik DN360 and DN27. The threshold-sensitive dynamic EQ allows different curves to be programmed for varying volume levels, supporting more even frequency distribution across wide dynamic variances, with constant volume attainment regardless of cut or boost at any frequency.
Klark Teknik DN9340 Helix Dual Channel Digital EQ — buyer FAQs
What is the Klark Teknik DN9340 Helix and what does it do?
The Klark Teknik DN9340 Helix is a dual channel, 2RU all-digital equalisation unit. Each channel provides a five-mode 31-band graphic EQ, twelve bands of full parametric EQ, four configurable filters (HPF, LPF, hi-shelf, lo-shelf and notch) and two bands of threshold-sensitive dynamic EQ (T-DEQ). All four processing sections can run simultaneously, making it a notably comprehensive EQ platform in a compact rack format.
What makes the dynamic EQ section of the DN9340 Helix distinctive?
The DN9340's dynamic EQ is threshold sensitive, meaning it responds to overall signal level rather than applying a fixed curve. Different EQ curves can be programmed to correspond to varying volume levels, supporting more even frequency distribution across wide dynamic variances. It also maintains constant perceived volume regardless of cut or boost at any given frequency, which distinguishes it from a standard static graphic or parametric EQ.
Which graphic EQ modes are available on the DN9340 Helix?
The DN9340 Helix offers five graphic EQ modes across its 31-band section. These include Proportional-Q, Constant-Q and Symmetrical-Q characteristics, plus emulations of two classic Klark Teknik designs: the DN360 and the DN27. This range of Q behaviour options lets operators match the EQ response style to the demands of a specific system or workflow.
Who makes the DN9340 Helix, and where does it sit in the Klark Teknik range?
The DN9340 Helix is made by Klark Teknik, a British professional audio brand founded in 1974 in Kidderminster, England and known for signal processing equipment used in live sound and recording. The DN9340 sits at the more feature-rich end of the Klark Teknik EQ line, referencing and emulating the brand's own earlier classic equalisers, the DN360 and DN27, while extending them with digital parametric and dynamic processing.
What should I check when buying a used DN9340 Helix?
When buying a used DN9340 Helix, confirm that all processing sections, including the graphic EQ, parametric EQ, configurable filters and both T-DEQ bands, are fully operational on both channels, since faults in any one section may not be immediately obvious during a quick power-on check. Check that the unit retains its programmed presets and responds correctly to level changes. Listings on this page carry a 21-day warranty covering major functional faults; the full buying guide at 10kused.com/used-av-equipment-guide/ covers what to look for in more detail.
