Professional Dual 31-Band 3U Equalizer product image

Product Overview

The Harmonai FCS966 Professional Dual 31-Band 3U Equalizer features dual-channel independent 31-band graphic equalization, with 31 precision faders per channel supporting constant gain/attenuation up to ±15dB. Its signal-to-noise ratio exceeds 90dB, total harmonic distortion (THD) is only 0.005%, and it includes balanced XLR and 1/4" input/output connectors, high-pass filtering, and low-/high-frequency tone controls — making it an ideal choice for live sound tuning, studio post-production, broadcast audio optimization, and fixed installation systems.

Equalizer Type

Dual-channel 31-band graphic equalizer

Q Factor

4 (ISO standard frequency points)

Constant Gain/Attenuation

±15dB

Input Impedance

10kΩ (balanced)

Output Impedance

<50kΩ (balanced)

Maximum Input/Output Level

+20dBu (balanced or unbalanced)

Fader Input Level Control

±15dB

Per-Channel Gain Control

-∞ to +10dB

High-Pass Filter

OFF to 250Hz

Low-Frequency Control

±6dB @ 50Hz, 6dB/octave

High-Frequency Control

±6dB @ 14kHz, 6dB/octave

Total Harmonic Distortion (THD)

0.005% @ 1kHz

Signal-to-Noise Ratio (SNR)

>90dB (ref. 0.775Vrms)

Noise

-94dBu, 22Hz–22kHz

Crosstalk

>-80dB @ 1kHz

Dynamic Range

>115dB

Frequency Response

20Hz–20kHz, +0/-1dB

Connector Types

Balanced XLR / 1/4" TRS inputs and outputs

Electronic Switching

In/Out and Filter (FET-type)

Power Supply

AC 110V/230V, 50/60Hz, 30VA

Dimensions

19" × 5.25" × 7.1" (483mm × 134mm × 180mm)

Weight

3kg

Typical Applications

Ideal for professional live sound system tuning, studio mixing and mastering, broadcast audio equalization, KTV and entertainment venue audio configuration, as well as precise frequency control in fixed-installation environments such as conference rooms, auditoriums, and theaters.

Contact our audio engineering team for technical specifications, application guidance, or pricing information on the Harmonai FCS966 Professional Dual 31-Band Equalizer.