John Lewis in Cambridge had these reduced to £119. I purchased the last white one which was £129. Sound quality was great, looks great and can be hooked up via bluetooth/wifi/aux port. Not sure if this is national.
These have party mode to link up multiple devices packed with lots of features (below).
Amazon: £173.00 (+ £5.61)https://www.amazon.co.uk/Harman-Kardon-20-Bluetooth-Multi-Channel-Black/dp/B00NAQ7TIM
What hifi Review:http://www.whathifi.com/news/ifa-2014-harman-kardon-launches-new-omni-multiroom-audio-system
Hope this helps somebody!
The speaker features from website:
SHOP ALL WIRELESS HD AUDIO SYSTEM
Wireless audio in every room
Seamlessly stream your favorite music to all Harman Kardon wireless HD audio products in your house
Listen to different music in each room
Stream your favorite classical music to one room while streaming rock to another. Multiple streams keep everyone happy.
One Touch Follow Me Audio
Walk from one room to another and your favorite music will follow at the touch of a button.
App Control and set up
Use the Harman Kardon app to stream your favorite music anywhere in your home. Control and configure your HD audio system wirelessly via the app with no cable connection required.
Link Button Speaker Control
Start a party and jump right in! When multiple songs are playing wirelessly, one button press cycles through them all so you can pick your favorite. One long press of the button starts party mode with every speaker playing back the same music. Room to room control made easy without the need to use your phone or tablet.
HD Audio Streaming
Unlike other wireless streaming systems, the Harman Kardon Omni 20 supports 24bit / 96kHz Studio Quality HD audio streaming. Enjoy a superior audio experience, higher resolution than from a CD.
Works with all the music apps you love
More music, more flexibility, more fun . With this feature, any app (for example iTunes Radio or Spotify) is part of the Harman Kardon whole home audio experience. Use Bluetooth and the Omni 20 will re-stream your music to other speakers in the house.
Multi-Channel Surround Sound
Group speakers together for an immersive same room wireless sound experience. A pair of Harman Kardon Omni 20 can be used as part of a stereo or multi-channel speaker system.
Re-stream Bluetooth or mini jack input
Connect your audio device or anything via Bluetooth or a 3.5mm mini-jack to your Omni 20 and the speaker will automatically translate the signal to Wi-Fi and stream its sound all over your house for a truly flexible whole home audio experience.
You can connect an OMNI 10 or Omni 20 to your TV set, and use them listen to the TV sound or movie soundtrack. You should use a wired connection from either a fixed line-level output on the TV, or from the TV’s headphone output. It is perfectly possible to add a second OMNI speaker for stereo use, through additional wiring, via signal splitters also known as Y-splitters. When re-streaming the TV sound wirelessly from one Omni speaker to other Omni speakers in the house, the audio signal will be slightly delayed compared to the video signal.