The AX80 has knobs for master volume and tuning , and a data entry knob that can be used to alter the currently selected parameter in real - time .
The value will jump to the knob 's current position .
The AX80 has knobs for master volume and tuning , and a data entry knob that can be used to alter the currently selected parameter in real - time , although the value will jump to the knob 's current position .