The polarity and resistance settings for the following manufacturer Effect units/MIDI controllers/Keyboards have been sourced from device testing as well as manufacturer websites, manuals and inquiries.
Care has been taken compiling this table. However it is recommended that the manufacturer be contacted for confirmation
Manufacturer |
Polarity |
Resistance |
Control Voltage1 (volts) minimum to maximum |
Arturia® |
Not applicable |
Not Applicable | -5 - 10 volts |
Avid (Eleven rack)® |
TRS |
10 - 100 | Not Applicable |
Behringer® |
RTS |
50 - 100 | Not Applicable |
Boss® |
TRS |
105 | Not Applicable |
Catalinbread® | TRS | 10 - 100 | Not Applicable |
Digitech® |
RTS |
10 - 100 | Not Applicable |
Digitech® |
TS |
250 minimum | Not Applicable |
Earthquaker® |
TRS |
50 - 100 | Not Applicable |
EHX® |
TRS |
10 - 100 | Not Applicable |
Ensoniq® SQ1/SQ2 |
Not applicable |
Not Applicable | 0 - 10 volts |
Fairfield Circuitry ® | TRS | 10 - 50 | Not Applicable |
Fractal Audio Systems® |
TRS |
10 - 100 | Not Applicable |
Eventide® |
TS |
5 - 25 | Not Applicable |
Kemper® | TRS or RTS4 | 10 - 100 | Not Applicable |
Line 6® |
TS |
10 - 15 | Not Applicable |
M-Audio® |
TRS |
10 | Not Applicable |
Magnatone® | TRS | 25 - 250 | Not Applicable |
Mooer® |
TRS |
10 - 100 | Not Applicable |
Mooger Fooger®2 |
Not applicable |
Not Applicable | 0 - 5 volts |
Mooger Fooger®2 |
TRS |
50 - 100 | Not Applicable |
Mu-Tron®7 (Phasor III and Biphase) | TRS | 10 - 250 | Not Applicable |
Mu-Tron®7 (Microtron IV) | TRS | 10 or 50 | Not Applicable |
MXR® | TRS | 10 | Not Applicable |
Neunaber®2 | TRS | 10 | 0 - 3.3 volts |
Pigtronix® |
TRS |
10 -100 | Not Applicable |
Ramble FX® (Kismet) | TRS | 10 - 1006 | Not Applicable |
Ramble FX® (Kismet) | CV | Not Applicable | 0 - 5 volts |
Red Panda | TRS | 10 - 50 | Not Applicable |
Strymon® |
TRS |
25 - 100 | Not Applicable |
TC Electronic® |
TRS |
25 – 50 (25 preferred3) | Not Applicable |
TC Helicon® |
TRS |
10 - 50 | Not Applicable |
Walrus Audio | TRS | 10 - 100 | Not Applicable |
Yamaha® |
RTS |
50 - 100 | Not Applicable |
Zoom® |
RTS |
20 - 100 | Not Applicable |
1Some devices require a dedicated control voltage from a CV pedal, rather than a variable resistance from an expression pedal
2Mooger Fooger® and Neunaber® effects can use either a CV pedal or an expression pedal
325k ohm gives a better sweep response for TC Electronic®
4Polarity is configurable within the Kemper® device
5There are many Boss® pedals so it is difficult to try all of them. 10k ohm is the recommendation and will work with all Boss pedals.
However, up to 100K ohm for example works correctly with the PS-5 Harmoniser, but does not with the PS-3 Phase shifter, Up to 50k will probably work for all Boss® pedals
6Kismet from Ramble FX is also designed to work with a 250K volume pedal using a Y-splitter cable
7Mu-Tron uses 1/8" (3.5mm) jacks rather than 1/4" (6.35mm)