: SoundTech was historically associated with the same parent groups as Soundcraft. You can check the Soundcraft Manuals Archive
The (often branded as Audio Choice by SoundTech ) is a 4-channel powered PA mixer head designed for live performances, karaoke, and small-venue sound reinforcement. Manual and Documentation audio choice qm4 manual link
Audio Choice QM4 (often listed as the AudioChoice by SoundTech QM4 : SoundTech was historically associated with the same
The "Audio Choice" brand is frequently distributed through major electronics suppliers like Parts Express . The QM4 model is often listed under their "Pro Audio" or "Home Audio" sections. audio choice qm4 manual link