Excellent compact headphones and useful case

The Sennheiser PX100 is a compact headphone at a budget price of about 30 pounds in the UK (about $50). It has a party trick whereby it folds up and fits into a small plastic case that is about the same size as a spectacles case. The main band is made from stainless steel sheathed in plastic, and comes in three sections joined by metal hinges in the same manner as spectacles. The earphones also turn through 90 degrees to aid storage. The overall finish and build quality seem excellent and the unit should last as long as it is not abused. Where the headphone scores highly is its sound quality, which is excellent. While not in the same league as my Sennheiser HD600 (costing about $400), it easily walked over my Sony MDR-V300 (costing about $50), providing significantly more detail and depth. The PX100 also walked over the headphones supplied with my Creative Zen Micro MP3 player: the difference was massive, and anyone using the supplied headphones is missing out big time. This is an excellent headphone, and highly recommended for use with portable audio devices such as MP3 players.