Summary: I found these on sale at the local Office Depot , they only cost me 200 pesos (15 Dlls) , they do sound nice but unfortuanely since they have a 300 ohms impedance they dont produce much volume with PMPS, when you switch the cancellation on it does improve sound and Raises the volume level, The...
Pros: Good SQ , dont even feel the headphones in your head
Cons: Battery pack is huge and gets in the way, 300 ohms impedance
Conclusion: A typically high quality product from Sennheiser, the PXC250 headphones offer a good alternative to products from Bose if you're looking for something a little cheaper. The audio quality is impressive although it doesn't quite beat what's produced by some top tier IEM manufacturers.
Pros: Rich sound, great treble, good detail, comfortable
Cons: Battery pack is large, slight lack of refinement to the sound