At least pairing is easy to set up with your phone and as the Halo supports multipoint technology, or MultiUse as Jabra calls it, the headset can be simultaneously connected and active with more than one piece of equipment at a time. Only two simultaneous connections are permitted, but this should be enough for most people as it means you can keep it connected to a Bluetooth enabled MP3 player at the same time as your phone, or with a laptop and phone at the same time. Pairing the headset with a second device is pretty straightforward. You just turn it on, press and hold the multifunction button for five seconds until the Bluetooth icon light turns solid blue and then do a search on your device and enter the standard 0000 passcode.
The Halo's sound quality for music listening was relatively good, but not what you'd call amazing. While the cans have good mid-range definition and reproduce high end frequencies in a crisp and clean way, their bass responsive isn't quite as full bodied or deep as you'd expect from an over-the-ear pair of headphones. As a result, bass drum stomps on dance tracks don't quite have the punishing kick that they perhaps should.
More worryingly we experienced problems of stuttering and broken audio playback when using the Halo with both a Dell Vostro laptop and an Acer desktop PC despite both PCs listing the connection strength as good. However, the Halo did work flawlessly with an O2 XDA Guide and an HTC Touch HD so as long as you plan on using it primarily with your phone you should be OK.
When it comes to call quality, the Halo also did a superb job. Not only do callers sound very clear and distinct through the ear pieces, but they also reported that the audio from the mic was excellent. This is not really all that surprising as the Halo is one of first stereo headsets on the market to feature two built-in microphones to help it block out ambient noise. It also has onboard DSP circuitry to filter out unwanted background noise and bring the voices on the call to the fore.