All of our pedals that have MIDI use MIDI Type A (MIDI Standard). Same as Korg and Make Noise.
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The pinout for the expression pedal is TIP=signal, RING=3.3V power, SLEEVE=ground. So your expression pedal has to have that pinout. Here's a list of pedals that we know work. Please let us know if you find any other pedals that work! Mission EP-1 and EP-2 (no polarity switch, polarity switch, respectively) M Audio EX-P (has polarity switch) Moog EP-2 (we've tested the EP-2, and it works. it has been replaced by the EP-3 which we haven't tested yet)
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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!
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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.
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Pedals come with a 2 year warranty right out of the box, but you can extend your warranty to 4 years here.
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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!
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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!
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