I don't know, but I like the sound of the birds, the waves, the wind, the paddle suction vacuum noise when you draw too hard....
But if I was racking up k's on distance training runs it would be good.
Same in the snow, I like to hear the board hitting the snow, hear the displaced snow hitting the trees, and to hear my mates scream "hey, check this out !!" Just before they do something stupid !!

