Summary: I just picked up a pair of PX100-ii today. I've been missing the PX100, and I've been curious how the sequel improves on the first one. First impressions (comparison to original from memory)...
Pros: ultralight and comfortable, single sided cord
Cons: no hard case, more expensve than its predecessor
Summary: These are one of the best open design headphones in this price range. They are very clear and don't leak as much as I thought they would. They are pretty inexpensive and I love the single sided wire. They are very comfortable so you can have them on for hours.
Pros: Sound quality, price, single wire, comfortable, portability.
Summary: for me they r the best portable headphones i have ever bought in my life. well i am only 19 now. i hv done a hd515 review too.there u can see where rate these headphones.these r the fun headphones.. with everything almost right.. well i consider this as portable audiophile headphones.(imho ).
Summary: This will be a very brief comparison review with the PX100, my review of which can be found here: http://www.head-fi.org/products/sennheiser-px-100-collapsible-headphones/reviews/8181
This is the most striking difference between the PX100 and PX100ii, with the latter being the far better...
Pros: Sounds fantastic, Very comfortable, Sturdy build quality, Attractive aesthetic design, Super portable, Serviceable
Cons: Doesn't isolate, A hair less comfortable than before
Summary: The PX 100s are certainly a supra-aural can to be reckoned with. If they were about $20 cheaper, they'd beat all of the Koss offerings for best value in portable headphones.
The bass: thick and meaty without being muddy. Works as well with Jay-Z as it does for the LSO.
Summary: There's not a whole lot I can say about these. I think they are an excellent compact headphone to have in a bag on the go, they are affordable, sound good with everything, and are a definite step up from the crummy earphones that come with most cell phones and iPods.
Pros: Fun bass, compact, surprising soundstage, jack is phone case-friendly, non-fatiguing, good for all genres, discreet
Cons: a little plebeian looking, upper mids and treble are a little veiled, some rattling with super low frequencies, no noise isolation
Summary: My PX100-ii's just failed after 3 1/2 years of use... and I immediately repurchased. I am a professional musician and own much more expensive headphones and headphone amps for mixing and critical listening, but these are what I use on a daily basis for exercise, work, and travel.
Summary: This is one my favourite headphones. They have fantastic build quality, are inexpensive, require little voltage to be driven properly, are small and discreet, and sounds better than some pricier headphones (IMHO).
They also are completely non-fatiguing, and great all-rounders.
Pros: Fantastic bass quality and quantity, Mids, Detailed and smooth treble, Airy with no closed-in feel
Cons: Clamping force is a bit high (but this is a portable mini-headphone, so if they don't clamp enough they will fall), sometimes uncomfortable