Pros: Bass, Mid and Treble too, 'soundstage', clarity, flat cables, work well w/o Amp
Cons: Price, 'Chinese vs Japanese' made, no mic, no warranty outside Japan
Solid built with flat cables and 7 included tips (3 foam S-L, 4 regular XS-L). No mic so maybe not always the best with a phone (if you need the mic that is). Attractive without being ostentatious. $78 and change from an Amazon seller - NOT $26 as this site shows (when I left the review). Amazon JP has them for around $50, but I don't know the ins and outs of international shipping from Japan. $50-75.00 feels about right for this set of in-ear headphones.
Mine are Chinese made. People claim the Japanese built models are superior. If this is the sort of thing that keeps you awake at night then maybe these aren't the in-ear headphones for you.
Mostly I use these in-ear headphones with an unamped iPhone/iPad or an amped iPod. I listen to rock (Queens of the Stone Age/The Kills), metal (Mastodon/Early Man), hip-hop (Killer Mike/Freddy Gibbs/Danny Brown), and some misc. electronic (Flying Lotus) type stuff. I also use these headphones with a Playstation Vita.
Sound wise I really like the Bass - foam tips with a good seal is needed for the best bass IMO. Deeper Bass than expected without drowning out the Mids and Highs. Much bigger sound than I've experienced from in-ear headphones - compared to my old Sony Fontopias and budget MEE in-ear w/mic. Passive noise isolation (again foam buds and a tight seal). Sound great without an amp, but an amp basically takes everything good about these buds up a notch. My Topping NX1 does sound a little noisey with these guys though - faint hum in quiet moments. The cable can be a little noisey too when it rubs against something hard and textured like a jacket zipper.
Why are these only in Japan? These in-ears are the second pair of Japan only Sony headphones I've bought in 10 years. Show the USA some love Sony!