231c Dual 31-Banddigital Graphic Equalizer/Limiter

231C Dual 31-BandDigital Graphic Equalizer/limiterDevice decription:1.Powe Switch 2.12V DC Power Cord Input 3.Channel AInput 4.Channel B Input 5.Channel AOutput 6.Channel B Output 7.USB Connection Ports 8.USB ON LED 9.Power ON LED Connect : Connection device to computer. Save:Save the device setting as fifiles to computer Open:Open the setting fifiles saved on the computer Copy ATO B:Copy the setting of channel Ato channel B Copy B TO A:Copy the setting of channel B to channel A Downlaod+Load:Will display scene windows About:display program version Exit:Exit and close program  1. GEQ gain control 2. CH Aand CH B GEQ gain display 3. CH Aand CH B output level display 4. CH Aand CH B signal Clip display 5. CH Aand CH B output gain control 6. CH Aand CH B output gain display 7. CH Aand CH B compression and     limiting control windows 8. CH Aand CH B threshold range control,     click the icon1, with the mouse left button ,     left or right movement. 9. CH Aand CH B Ratio range control,    click the icon2 with the mouse left button ,    down or up movement. 10. Connection display: If connection successfull     display green,else display black SPECIFICATIONSModel No.231CInputsConnectors:Balanced XLR(pin 2 hot) / Impedance:Balanced 40 kΩ,unbalanced 20 kΩInput Level:>+10dBu /CMRR:>80dB,at 1KHzOutputConnectors:Balance XLR (pin2 hot) / Impedance:Balance:200Ω,unbalance:100ΩMax Level:>+20dBu,Balanced into 2kΩ / >+17dBu? unbalanced into 1kΩSystem PerformanceFrequency Response:20Hz-20KHz +0.5dB/-0.5dB / Dynamic Range: > 114dBSNR: > 102dB / THD+N=: -90dB,20Hz - 20KHAdjustable RangeInput Level:+6dB/-54dB / Ratio Range: 1:1,2:1,3:1,4:1,5:1,6:1,NF:1Attack Time Range: 1ms,2ms,5ms,10ms,20ms,30ms,50ms,100msAttack Range: +20dBu/-40dBu, / Noise Gate Range: -60dBu/-60dBuRelease Time Range : 10ms,20ms,50ms,100ms,200ms,300ms,500ms,1sPower SupplyOperating Voltage: DC12V/1.5A / Power Consumption: