 Some digital accordions allow the entire instrument to be transposed to a different key and/or change the tuning.The Scandalli EWA has a wireless transmitter and receiver, which means that the instrument can be played onstage without a wired connection to the sound system.External pedals can be plugged into the Scandalli EWA, such as a sustain pedal, or pedals to control transposition or portamento/pitch glide effects.