C'est quoi un e-bow ?

Citation : "I think it really shines on fretless."
Michael Manring

Citation : Using the EBow on Bass

The EBow was designed for guitar string spacing. It gets its necessary alignment by resting on the strings adjacent to the one you're playing. To play the EBow on bass, you must accomplish this critical alignment in challenging ways. You can position the EBow between the strings and tilt it sideways to get the string you want to play to run down the DriveChannel. You can use your thumb and forefinger off the edges of the EBow to simulate wider spaced GuideGrooves to rest on the adjacent strings. Or, you can just hold the EBow in the proper position through sheer will and determination. Light gauge strings and a touch of distortion can prove useful, especially in the harmonic mode.