Electronic User Guide
Congratulations on your purchase of the Mission SP25L PRO Aero. This product is designed to be intuitive to setup and operate, and to provide many years of trouble free service. However, we recommend that you take a few moments to read through this User Guide in order to get the best possible experience with your new pedal.
The SP-25L-PRO has dual 25K outputs with polarity selection and a latching toe switch, compatible with many devices for guitar, keyboards, acoustic instruments both live and in the studio.
Activating the toe switch lights an LED in the acrylic base that creates an illuminated halo effect around the pedal. When used with compatible MIDI controllers and digital devices, the illuminated base can indicate the status of a remote effect.
The SP25L has three 1/4″ TRS output connections. The two outputs on the left side are the expression pedal outputs. Connect one or both of these to the expression pedal input(s) of the device you wish to control. 1/4″ TRS (stereo) cables are required; regular TS instrument cables will not work.
Both expression outputs will be controlled simultaneously. It is not possible to switch the pedal between different outputs. For switchable outputs, the SP25L PRO Aero can be used with the Expressionator multi expression controller.
The single output on the right side is the switch output. This can be connected with either a 1/4″ TS or TRS cable depending on the requirements of the device you are connecting to. The switch output may be left unconnected if it is not required.
After connecting the cables, follow the instructions in the user manual for the device you are connecting to determine if it should be enabled or calibrated for expression pedal use.
The expression and switch functions will operate without power. To use the illuminated base function, an external power supply is required. Connect a 9v DC power supply with a 2.1mm center pin negative connector. Power consumption is approximately 30mA
There is no global standard for expression pedals; different manufacturers and products can require different types of expression pedal. The SP25L Pro Aero expression outputs are 25K Ohm TRS. These will work with many, but not all devices. Some devices will still work with a 25K expression pedal but required a reversed polarity where the ring of the TRS is connected to the potentiometer wiper.
The SP25L PRO Aero factory defaults are set so that OUT1 and OUT2 are tip to wiper. For use with ring to wiper devices, the polarity of the expression pedal may be reversed. Remove the 4 rubber feet and metal baseplate. Locate the polarity switches marked SW1 and SW2.
SW1 – OUT1 – Right – Tip to Wiper
SW2 – OUT2 – Right – Tip to Wiper
Setting either switch to the left position will reverse the polarity to ring to wiper on the corresponding output.
Make sure to replace the baseplate and feet after setting the polarity.
Read, Keep & Follow these instructions
Heed all warnings
Clean only with dry cloth
Do not use this apparatus near water
Do not expose the apparatus to dripping or
splashing and ensure that no objects filled with
liquids, shall be placed on the apparatus
WARNING: To reduce the risk of fire or electric
shock do not expose this apparatus to rain or
Unplug this apparatus during lightning storms or
when unused for long periods of time
Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions
Only use attachments/accessories specified by
Prolonged listening at high volume levels may
cause irreparable hearing loss and/or damage.
Always be sure to practice “safe listening.”
Refer all servicing to qualified service personnel.
Service is required when the apparatus has been
damaged in any way, such as:
Power-supply cord or plug is damaged
Liquid has been spilled or objects have fallen
into the apparatus
The unit has been exposed to rain or moisture
The unit is dropped or the enclosure is
The unit does not operate normally or changes
in performance in a significant way
Dismantling, rewiring, removing components or
otherwise altering the function of the unit may
cause unexpected behavior and will invalidate