Klark Teknik DN370 Dual 30-Band, 1/3 Octave Analog Graphic Equalizer

The Klark Teknik DN370 is a dual-channel, 30-band, 1/3-octave analog graphic equalizer designed for corrective EQ and filtering in live sound and installed systems. Its enhanced Proportional-Q response is intended to recapture the feel of the classic single-channel DN27, giving you both gentle tonal contouring and tighter, higher-Q cuts when you need more surgical control for feedback and resonances.

These units show signs of heavy wear but are in good working condition.

Proportional-Q EQ for FOH, Monitors, and System Tuning

For Front of House and stage monitoring applications, the DN370’s Proportional-Q behavior helps maintain musical, natural-sounding adjustments while still allowing precise notch-style correction. This makes it well suited for improving intelligibility and addressing common room and loudspeaker issues such as resonances and standing waves.

Integrated Filtering and Notch Control

Each channel includes swept high-pass and low-pass filters with illuminated LED rings, plus two overlapping high-precision swept notch filters (also with illuminated LED rings). In practice, this gives you a flexible toolbox for controlling sub-sonic rumble, tightening low-end buildup, and targeting narrow problem frequencies without having to rely solely on the 1/3-octave bands.

Connectivity and Installation-Friendly Hardware

The DN370 provides electronically balanced inputs and outputs on industry-standard XLR and Phoenix connectors, making it equally at home in portable racks and fixed installs. For reliability and confident operation, it includes channel bypass and graphic EQ range selection switches, long-throw 45 mm oil-damped faders with dust covers, and power-off bypass relays with a recessed power switch to help avoid accidental operation.

Rackmount Size and Specs

• Chassis: Rugged 3U rackmount
• Dimensions: 133 mm (5.25 in) H, 482 mm (19 in) W, 205 mm (8 in) D
• Weight: 12.8 lb (5.8 kg)