: Adjust the Gain for each channel until you have a strong signal without clipping (distortion), then use the Master Level to control the overall volume. Troubleshooting and Maintenance
The (often referred to as the Audio Choice by SoundTech QM4 ) is a versatile 4-channel powered mixer designed for portable PA applications like karaoke, DJ sets, band practice, and small room presentations. Audio Choice QM4 Technical Specifications audio choice qm4 manual
: Features an EFX Loop, Line Out, and a footswitch option. : Adjust the Gain for each channel until