Radius Atomic Bass for iPhone
Don't let the name of this wired stereo headset fool you: the Radius Atomic Bass for iPhone will work perfectly with any other music phone as well. It incorporates a mic and call answer button into an inexpensive, decent-sounding pair of earphones.
Klipsch Image S4i
This headset is an excellent value for anyone who is picky about audio quality. The call answer button doubles as playback controls for the iPhone's MP3 player, but its integrated volume rocker will work with any compatible music phone.
Beats Solo by Dr. Dre headphones
If you're loathe to stick earbuds into your ears, consider an on-ear model, like this stylish set from Dr. Dre and Monster. The Beats Solo comes in a choice of three color options (black, white, or red), offers tons of bass, and integrates a mic module with bonus controls for the iPhone.
Jabra BT8010 Stereo/Mono Bluetooth Headset
The Jabra BT8010 can be converted from a mono Bluetooth headset into a stereo one with a second earpiece. Other innovative design features such as an OLED display, a jog dial, and a simple on/off slider makes the BT8010 one of the best Bluetooth headsets on the market, especially for those who want two Bluetooth headsets in one. Better yet, you can now find it supercheap online.
Nokia BH-905
You don't have to deal with wires to have cushy, full-size 'phones for your mobile music device. In terms of audio quality and comfort, the Nokia BH-905 is certainly one of the best stereo Bluetooth headsets out there.
Yamaha NX-B02 Bluetooth Speakers
As long as we're on the subject of Bluetooth, why not get an excellently-designed pair of speakers? Few battery-powered Bluetooth speakers can match the NX-B02's combination of audio quality and ultracompact portability.
Motorola EQ5 portable wireless speakers
Moto is pushing its EQ5 portable wireless speaker as the perfect accessory for T-Mobile's Motorola's Rokr E8, but you needn't stick within the Moto environment to enjoy these easy-to-use speakers. Pair the EQ5 with any A2DP compliant cell phone for a hassle-free on-the-go listening experience that you can share with your friends.
Logitech Pure-Fi Mobile
The Logitech Pure-Fi Mobile is a versatile portable-speaker system that's an excellent option for mobile-music-device users who value a compact design and multiple connection options over stellar audio quality. The bonus is you can attach your player via a wired connection for much improved sound.
CyFi Bluetooth speaker
This unique speaker comes with all the requisite gear to attach it to your handlebars so you can rock out while you ride. The CyFi is also weather-resistant--a true outdoorsman.
Sonos Zoneplayer S5
The S5 isn't a music phone accessory in the strictest sense, but we couldn't resist including it on this list because of the sweet functionality it offers when used with an iPhone. You can download an app that will let you control the S5--which is connected to a plethora of networked music sources--from any room in your house.
Honorable mention: Elima floating speakers
These nifty Bluetooth speakers are waterproof--and they float. They'd make the perfect pool accessory for those with A2DP music phones...if only the speakers were still available.