Yamaha has introduced two 5:1 surround sound speaker systems for the iPod - featuring built-in digital radio tuners.

The founders of Surround Sound, Yamaha Electronics has introduced new models of its YSP Digital Sound Projector range. These all-in-one boxes offer true multi-channel surround sound that can be tailored to a room's acoustics.

The two iPod supporting models are the YSP-30D (£799) and YSP-40D (£1199).

As you'd expect at this kind of price, these systems offer amazing sound quality and are simple to setup. The speakers employ Yamaha’s exclusive sound reflecting technology (Intellibeam Automated System Calibration) which automatically calibrates the sound to your room’s layout.

All models also come with a variety of sound modes, and are capable of focusing audio at specific positions across the room. Additional features include Night Listening Enhancer which ensures that movie dialogue or quiet passages are not missed during low-volume listening and also the TV Equal Volume mode which prevents sudden bursts of loud sound - from TV ads, for example.

The YSP-30D and YSP-40D speakers also include DAB Tuners and are iPod compatible, and available in silver or black. More information is available here.