This is one of the bikes built by Brook Henry at Vee Two Australia. It is without a doubt a gorgeous machine. Jay is right. It sounds mechanical and it is but this engine has been modified by Brook Henry and it puts out almost 30 more horsepower than what Ducati racing bikes were putting out in the late 70 and early 80s.
Here is a link to an episode of Jay Leno's garage featuring the Imola Evo
https://www.youtube.com/watch?v=yE1F6pJDvGk&feature=youtu.behere is a link to Vee Two. Make sure to look at the Gallery of the Imola Evo
https://www.veetwo.com/cheers