On the GT-1000 and GT-1000CORE, whether multiple wah effects can be used simultaneously depends on the type of wah.
- PEDAL WAH: Only one instance is available, in the PEDAL FX block. The wah is controlled in real time using the expression pedal on the GT-1000, or an expression pedal connected to the CTL/EXP jacks.
- AUTO WAH: Multiple instances can be used simultaneously in the FX1–4 blocks (FX1–3 on the GT-1000CORE). The filter changes automatically over a periodic cycle.
- TOUCH WAH: Multiple instances can be used simultaneously in the FX1–4 blocks (FX1–3 on the GT-1000CORE). The filter responds to the input level of the guitar or bass.