Equalizer Type
Dual-channel 31-band graphic equalizer
Professional audio, microphones and system integration

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.
Dual-channel 31-band graphic equalizer
4 (ISO standard frequency points)
±15dB
10kΩ (balanced)
<50kΩ (balanced)
+20dBu (balanced or unbalanced)
±15dB
-∞ to +10dB
OFF to 250Hz
±6dB @ 50Hz, 6dB/octave
±6dB @ 14kHz, 6dB/octave
0.005% @ 1kHz
>90dB (ref. 0.775Vrms)
-94dBu, 22Hz–22kHz
>-80dB @ 1kHz
>115dB
20Hz–20kHz, +0/-1dB
Balanced XLR / 1/4" TRS inputs and outputs
In/Out and Filter (FET-type)
AC 110V/230V, 50/60Hz, 30VA
19" × 5.25" × 7.1" (483mm × 134mm × 180mm)
3kg
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.