Hercules DJCONTROL INPULSE T7 Mode D'emploi page 89

2. The sound on my headphones is
distorted or too low.
Make sure that your headphones feature a TRS
connector (standard headphones) and not a TRRS
connector (headphones + microphone).
Sleeve
TRRS connectors are not compatible with the DJControl
Inpulse T7 controller.
Tip
Ring
88
Tip
Ring
Ring
Sleeve