The dual channel equaliser shall provide five bands of fully parametric filters and separate tunable high & low cut filters for each channel.

Each equaliser filter shall provide 25dB of attenuation and 15dB of accentuation at continuously variable frequencies ranging from 20Hz-20kHz and shall allow for bandwidth adjustment from 1/12 to 2 octaves.

Each equaliser shall meet or exceed the following performance specifications:

Distortion (THD+N) < 0.01% @ 1 kHz 4dBu
Frequency response ±0.5dB (20Hz-20kHz)
Noise <-94dBu (20Hz-20kHz unweighted)
Maximum output level 600Ω +22dBu

Each equaliser shall have adjustable low & high cut 12dB/octave slope filters ranging from 15Hz-300Hz & 2.5kHz-30kHz. Stereo or mono operation of the unit shall be possible with all 10 filters available in mono mode.

Separate in/out switches shall be provided for each parametric filter section, and each complete equaliser channel.

The equaliser shall be failsafe, that is the unit shall return automatically to the by-pass condition in the event of power supply interruption.

A rear panel switch shall be provided to isolate the signal ground connections, quickly and safely, from the chassis ground.

All audio connections shall be via XLR style connectors and a tamperproof front panel cover shall be available to fit the unit.

The unit shall be capable of operating from a 115/230V +/-12% 50/60Hz AC power source.

The equaliser shall be the Klark Teknik Dual Channel Model DN410 and no alternative specification option is available.

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