The Oscillator Devices Expression Voltage Converter is a small accessory, not an effect: it sits between an expression source and certain Oscillator Devices pedals so their expression inputs can accept control voltages above 5V. The maker describes it as "a voltage converter to use the Garbage Collector or Trash Panda with expression inputs with more than 5V"1.
What it does
Some expression inputs expect a control voltage of 5V or less. Where the source puts out more than that, the converter brings the voltage into range so the pedal's expression input can be driven safely. Oscillator Devices names two pedals it is for: the Garbage Collector and the Trash Panda, both used with expression inputs above 5V1.
The converter is only relevant where the expression input sees more than 5V. The maker's page does not describe any other use.
Practical details
The unit is a slim stick rather than a pedal, with listed dimensions of 85 × 20 × 20 mm and a weight of 0,035 kg, so it fits alongside a board or in a bag rather than taking pedal spacing1. The maker's listing gives a shipping time of 3 to 5 days1.
Questions
Do I need the Expression Voltage Converter with my Trash Panda?
Only if the expression input you want to connect puts out more than 5V. Oscillator Devices describes the converter as a way to use the Garbage Collector or Trash Panda with expression inputs above that voltage. If your expression source stays within 5V, the maker's product page does not call for the converter.
Sources (1)
- Expression Voltage Converter, Oscillator Devices, 2026-09-13
