Fuze Volumn

Have just purchased the Fuze 8Gb, and although I like the player enormously I’m less than happy that it doesn’t have enough power to drive adequately a pair of classic Sennheisers HD-201s (only 24 ohm), yet a Shuffle or £15 Flash-stick player does! So my only options are to buy 16 ohm headphones, unless I can be sure that anything with a higher-rating than that will suit the Fuze, or spend money on a bulky amplfier! Very, very disappointing, SanDisk… you should be able to do better than this.