All of our pedals that have MIDI use MIDI Type A (MIDI Standard). Same as Korg and Make Noise.

I recommend lowering the knob so that it rubs against the pot nut, making it harder to turn and shouldn't move on it's own.


Some customers also put a felt washer between the knob and the nut to increase physical resistance.


Our knobs have little set screws in them loosen this with a 1/16 hex key, lower it down as far as it will go and then tighten it again. You're done!

All Empress pedals with the exception of the discontinued Superdelay use center negative power supplies. The Superdelay uses a center positive power supply. Please never attempt to power an Empress pedal with the reverse polarity as this could damage the pedal. Most power supplies will have a graphic like the following picture indicating what polarity the power supply is. You can find a list of compatible power supplies here. If you have any questions about if your power supply will work please contact support@empresseffects.com.

If you are using any Empress pedal besides the Superdelay the power supply should be center negative.

Pedals come with a 2 year warranty right out of the box, but you can extend your warranty to 4 years here.

You need a 1/16" hex key/allen key to tighten the knobs. If you've lost the knob or set screw, shoot us an email to support@empresseffects.com and we'll help you out!

Yes! All of our pedals play nicely with bass. Check out the "Features & Specs" section for information on the frequency response of our pedals. We have lots of customers who play bass through our pedals!