Roland SP-404MK Reference Manual page 45

Using the Effects Adding Effects to a Sample (BUS FX)
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Using the MFX Effects
You can select and use the effects you like for the MFX effects.
1
While holding down the [MFX] button, turn the [VALUE] knob or the [CTRL 3] knob to select the effect to
use.
You can also use pads [1]‒[16] instead of the [VALUE] knob or the [CTRL 3] knob to select an effect.
To use pads [1]‒[16] to select effects from #17 and up, hold down the [MFX] button and the [DJFX
LOOPER] button at the same time.
2
After selecting the effect, take your finger off the [MFX] button.
The effect turns on, and the effect edit screen appears.
3
Play back a sample.
4
Use the [CTRL 1]‒[CTRL 3] knobs to adjust the parameters.
You can also access the effect sub-parameters by holding down the [VALUE] knob and operating the
knobs.