The Donner Viper is a compact 2-in-1 passive volume and expression pedal built for guitarists and keyboardists who need versatile control without the bulk. This pedal automatically switches between volume mode—for controlling overall signal output and executing smooth volume swells—and expression mode, which connects via TRS cable to manipulate parameters on compatible pedals like delay time or modulation rate.
Designed with a lightweight hard plastic enclosure, smooth taper, and non-slip rubber base, the Viper fits easily into tight pedalboard spaces. Best of all, it requires no batteries or power supply, keeping your rig simple and your wallet happy. An affordable, space-saving essential for any pedalboard setup.
