The HQ 231 features ART's FDC Feedback Detection Circuitry. The ART proprietary FDC differs from similar systems in that it is extremely fast. Although it illuminates the band with the greatest energy with the brightest LED, it doesn't fully discriminate between bands and will not get "stuck" on one band when there is no signal. >More
ART's 341 Dual-Channel, 15-band, 2/3-octave graphic equalizer features: constant Q circuitry with a 3% center frequency accuracy, 20mm center detent sliders, selectable boost/cut range of 6dB or 12dB, active balanced and unbalanced input and output connections, internal power supply, and so much more. The rugged, all-steel constructed chassis occupies 1U rack space and is intended for installation in standard 19" equipment racks. >More
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