Earphone Geek is a pretty well-known audio blogger here in Japan. Rightly, he got a short but good ear on Sony's new earphones. Here are a few notes from his review.
XBA-H3 Highlights: ohmage
Wide sound stage
Good high frequency extension
Powerful, well-resolved 30-50Hz detail
Great sound balance for a hybrid dynamic / balanced earphone
XBA-H3 Highlights: porridge
Vocals should step out further
NOTE: MMCX connection
XBA-H2 Highlights: porridge
Balance is poor
Same confused high range as EX1000
Cloudy high range of Sony's previous XBA series
Too much bass for such confused high range
NOTE I: Sound that mimics the worst of the EX1000 and the worst of the previous XBA series.
NOTE II: Earphone geek notes NO good points.
XBA-H1 Highlights: ohmage
High range is a clear improvement to the cloudy presentation of the previous XBA series
High range still not perfect; some defects from the XBA series remain
Beautiful bass reproduction
Most mature-sounding of the new H series
NOTE: Among the new, bass-blessed H series, this model has the best cost/performance.
The H1 sounds great!