1231 Professional 2 Channel Stereo Graphic Equalizer1231 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
1231 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. 45mm length faders
produced by brand-named manufacturer, with perfect damping, good
hand-feeling. High quality high power and reliable switching power
supply, ensures that the machine can work long-term and stable
under 100V ~ 240V, meet with global standard power supply in all
countries.
FeatureHigh-strength 3U aluminum panel chassis, beautiful and practical
dual filter dust-proof design, the complete elimination of dust
impacts
45mm length faders produced by brand-named manufacturer, with good
hand-feeling, precise adjustment
high-power switching power supply, with stable performance, wide
voltage range
double-sided circuit board production, with reliable performance,
low noise
Imported IC and high precision RC components, with high
consistency, good sound quality
input / output connectors: 1/4 inch TRS, XLR and strip type
terminals
Technical Parameters| Input impedance | Balanced 40KΩ, 20KΩ unbalanced |
| Output Impedance | Balanced 200Ω, 100Ω unbalanced |
| Maximum input level | +21 dBu, balanced or unbalanced |
| Band Width | 20HZ-20KHZ (+0.5 dB/-1dB) |
| Dynamic range | 109dB 115dB |
| SNR | 90dB 97dB |
| Total Harmonic Distortion | <0.005% |
| Channel Isolation | 90dB |
| Power Supply | 220V 24W |
