Drawing inspiration from big-mountain powder lines, technical comp skiing and everything in between, the Black Diamond AMPerage is a hybrid fun shape that turns any terrain into a creative blank slate. Its deep sidecut, 115 mm waist, full tip and tail rocker and underfoot camber add up Drawing inspiration from big-mountain powder lines, technical comp skiing and everything in between, the Black Diamond AMPerage is a hybrid fun shape that turns any terrain into a creative blank slate. Its deep sidecut, 115 mm waist, full tip and tail rocker and underfoot camber add up to a floaty ski that's as comfortable sending backcountry booters as it is smearing through windbuff or arcing on groomers. The everyday ski of choice for Black Diamond athlete Callum Pettit, the AMPerage is the closest thing you'll find to the mythical one-ski quiver.to a floaty ski that's as comfortable sending backcountry booters as it is smearing through windbuff or arcing on groomers. The everyday ski of choice for Black Diamond athlete Callum Pettit, the AMPerage is the closest thing you'll find to the mythical one-ski quiver.