● Input impedance: 22KΩ
● Output Impedance: 200Ω
● Frequency response: 20Hz ~ 20KHz ± 1dB
● Frequency Response: Dual 15 band
● equalization gain: +12 dB/-12dB
● THD: 0.05% (1KHz)
● SNR:> 90dB
● Signal Control: IN / OUT and LOW OUT
● Working voltage: 220V ~ 50Hz/60Hz

Dual 31-Band electronic graphic equalizer
EQ1231 is designed mainly for a variety of long-term and free maintenance requirements,with the use of innovative technology and advanced production technology, created the dual 31-band equalizer. Using advanced circuit design, high quality components, allowing EQ1231 to be with 10HZ to 50KHZ frequency response, greater than 90dB signal to noise ratio, less than 0.005% total harmonic distortion and greater than 90dB channel isolation.

Dual 31-Band electronic graphic equalizer
(with compressor and Type III Noise Reduction)
EQ2231 is designed basing on EQ1231 with adding compression limiter and type III Dolby noise reduction function, help to further reduce the noise of the system,
making the system very quiet. Compression limiter function use the currently best limiter IC (THAT2181 and THAT2522) for production, with greater than 120dB dynamic range, less than 0.0025% distortion, totally can meet with the professional level compression limiter.

Dual 31-Band electronic graphic equalizer
(with compressor and Type III Noise Reduction)
EQ966 include compression limiter and type III Dolby noise reduction function, help to further reduce the noise of the system,
making the system very quiet. Compression limiter function use the currently best limiter IC (THAT2181 and THAT2522) for production, with greater than 120dB dynamic range, less than 0.0025% distortion, totally can meet with the professional level compression limiter.

● Input Type: Balanced Interface
● Input impedance: 20k
● Maximum input level: +23 dBu
● Output Type: servo-balanced
● Maximum output level: +23 dBu
● Gain Control: ∞ to +6 dB
● Bandwidth: 1/3 octave
● Error rate: ± 3%
● Range: ± 6 or 15dB
● Bands: 2 X 31
● I / O connectors: 1/4 "headphone jack,
● XLR, and insulation strip