Sennheiser PC 111

The Sennheiser PC 111 is an over the ear Internet telephony headset that features an adjustable microphone, volume control and a compact design that can be worn on either ear, making it ideal for travellers.

The PC 111 works with any VoIP or instant messaging client including Skype, MSN and iChat and doesn't require any drivers to operate. It connects to your PC or Mac via a standard 3.5mm headphone and microphone jack. The only downside is that it becomes your computer's main audio source, much like it were a set of speakers. The benefit of this is that its use isn't just restricted to VoIP or messaging applications - although it isn't ideal for music or gaming as there is only a single earphone.

The PC 111 may be a basic device, but it's quite comfortable to wear. Our only complaint is that the cover's sponge material makes your ear quite hot, even during short listening sessions. Conveniently, the unit can be worn on either year by removing the ear clip, and re-attaching it the other way around. The microphone's plastic hinge glides smoothly, so it should adjust to fit anyone.

The microphone itself is loud and clear and a handy in-line volume control and on/off switch sweetens the deal. These controls can conveniently be clipped to your shirt and the three metre cable means you can sit well away from your PC or notebook and still be able to use the PC 111.

Sound quality is above average; calls using Skype were generally crisp and clear, while the microphone handled outgoing sound well. Keep in mind that the quality of any VoIP call depends on a number of factors out of your control, including the quality of your Internet connection. Overall, we preferred the in-ear PC 121, but this is a matter of personal opinion. Being an over the ear unit, the PC 111 is more susceptible to surrounding noise, while also leaking sound far easier.

Also included is a 2.5mm stereo jack, the same connection used on some mobile phones, meaning the PC 111 can be used for hands-free calling as well. We don't recommend this though, as the extra long cord will soon become tangled and cause some frustration. We'd advise to stick to Bluetooth or dedicated mobile phone headsets for hands-free mobile phone calls.