We tested the iPad with several Bluetooth mono headsets, and while we were able to pair some of them with the iPad 2, we were unable to direct any of the iPad 2's audio to the headset, nor were we able to use the headset's microphone with applications that accept microphone input.

However, these were all standard mono Bluetooth headsets. Some Bluetooth single-ear headsets, such as several from Jabra, support A2DP (stereo Bluetooth), despite being mono models. With the original iPad, you could pair these A2DP single-ear headsets and listen to music and other audio through the headset. We didn't have any mono A2DP-compatible headsets on hand to test, but we suspect this will hold true for the iPad 2, as well.

As with Bluetooth stereo (A2DP) headphones, Bluetooth speaker systems pair easily with the iPad 2 and, when chosen as the audio output, route all audio through the speakers. And thanks to iOS 4.1 and later, controls on the speaker system can be used to control media playback on the iPad.

Bluetooth accessories for streaming audio to your stereo, such as Belkin's , also work well, letting you watch video or play games on your iPad's screen while the audio plays through your big rig.