Video by HotoneAudio via YouTube
Source
Ampero Press is a compact, passive volume/expression 2 in 1 pedal designed not only for controlling Ampero series multi-effects, but also for controlling other musical devices (with external EXP pedal jacks) or using as a passive volume pedal. Ampero Press boasts the DNA of the Hotone Ampero line: classic black and gold attire with a high-end textured finish. It has solid aluminum alloy casing, smooth and comfortable user experience.
Features
✪ Volume/Expression 2 in 1 Pedal
✪ Independent volume and expression output jacks
✪ Solid aluminum alloy casing
✪ Passive design – no power supply needed
✪ High quality potentiometer ensures precise response and long life
✪ Works with a variety of instruments and devices
Specifications
Pot Resistance
Volume: 100kΩ
Expression: 10kΩ
Dimensions: 81mm(W)*162mm(D)*51mm(H)
Weight: 430g
More info at: http://www.hotoneaudio.com/products/press/Ampero%20Press