8-channel stereo mixer with adjustable gain, treble, and bass. External effects can also be added. - Model Name: BOSS BX-8 - Number of Channels: 8 channels - Function: Stereo mixer - Power Adapter: BOSS AC-90 - Controls: Gain, treble, bass adjustment - Output: L/R output Power-on confirmed Checked ◾️Regarding the level of ch1 The sound is unstable near the low level. The levels of ch2-8 are otherwise fine. ◾️Other There is some crackling noise when adjusting the knobs, but it should not be a problem for use. It may improve with internal cleaning. Basically, no claims and no returns are accepted.