I think that with the latest firmware update the Volume System Settings are hidden for Europe. So there’s no way to get more dB by switching to High, unless you switch regions.
But you can only switch regions if you do a firmware upgrade, so you’re in trouble if you already ran the latest firmware. But here’s the million dollar answer to your problem:
Use the drag and drop method and “upgrade” (again) to the latest firmware, after you disconnect and power on your Sansa clip + you get the chance to select your language and your region.
DON’T SELECT EUROPE
100% volume in Europe is the same as 50% volume on High Volume setting in the North-America region.
More info about updating firmware with the drag and drop method can be found here:
http://forums.sandisk.com/sansa/board/message?board.id=clipplus&thread.id=2911
