![Active subwoofer(STRATOS 8000)]( "Active subwoofer(STRATOS 8000)")
①. GAIN：gain knob, separately control 1#-4# input signal strength；
②. LINE/MIC switch: Signal source selection switch for line input or microphone input gain;
③. 6.35mm JACK：3 # signal input socket, connecting to acoustic equipment with high input impedance such as acoustic guitar;
④. DSP CONTROL：DSP function setting knob, you can set the menu by pressing and turning;
⑤. LINE INPUT：RCA line signal input socket;
⑥. MIX OUTPUT：signal mixing output socket;
⑦. SUB LEVEL：Volume knob of Sub；
⑧. LINE LINK：signal link output socket, linking 1 # -2 # signal input socket respectively;
⑨. INPUT socket: signal input socket, COMBO socket, compatible with XLR and 6.35mmJACK plugs.
| STRATOS 8000 Analog Mixer |
| Input channel | 4-way（2x Mic/Line，1xRCA , 1xHi-Z ） |
| Input connector | 1-2#：XLR / 6.3mm jack combo 3# |
| 6.3mm jack balanced TRS |
| 4#：2 x RCA |
| Input impedance | 1-2# MIC: 40 k Ohms balanced |
| 1-2# LINE: 10 k Ohms balanced |
| 3#：20 k Ohms balanced |
| 4#: 5 k Ohms unbalanced |
| Output connector | 1-2#: Line Link：XLR 3#: Mix out： XLR |