Radius Co. Ltd. are from Japan, but unlike fellow countrymen such as Audio Technica or Denon, Radius mostly relies on rebranding Chinese OEM in-ear phones rather than creating original designs. Most of their products are found in the lower price segment, usually competing with fashion brands such as Skullcandy or JBuds.
This however changed when Radius introduced the HP-TWF11 “DDM” phone some time ago. They were priced at around $200 and featured a seldom seen construction that uses two dynamic drivers; a big one for bass and midrange next to the ear and a smaller one for treble behind it – hence the “DDM” nickname that stands for “Dual Driver Matrix”. While these DDM couldn’t quite compete with top-tier dynamic driver IEMs such as the JVC FX700 or Sennheiser IE8, they pulled off a gigantic in-your-face bass while still retaining some very nice stereo imaging, timbre, and good dynamic range.
Now Radius revised their DDM concept and released the HP-TWF21 “W N°2”. Compared to the old DDM, the new DDM2 (as I call them) have an infinitely better form factor, somewhat more tamed bass quantity, better clarity… and of course a somewhat higher price tag than the old ones.
Read on to find out more about them. Continue reading…









Forum member JxK generously loaned me his fresh pair of Ecci PR401 in-ear phones. There’s a bit of hubbub surrounding these phones at the moment – seemingly they’re quite the bang for the buck. Of course there are more than a few other good phones in that price range, so it’s always interesting to see how such underdogs rank in the grand scheme of things.
Kitsound, a division of British mobile accessories distributor Kondor, mainly seem to rebrand inexpensive Chinese OEM/ODM audio products for portable and home use. They offer portable speakers, iPod speaker docks, USB chargers, and of course headphones.


Ortofon Denmark is best known for being a seasoned manufacturer of cartridges and stylus tips for both DJ turntables and home hifi record players alike. Less known in Europe and America is that Ortofon’s Japanese daughter brand has quite the different gear line-up to offer for the Asian market. Not only does Ortofon Japan provide everything from amps to speakers for an upper class home hifi system, lately they also entered the portable audio market with two in-ear phones, first the e-Q7 and now the e-Q5.






