High-Resolution Audio. From source to speaker, Sony has united an array of technologies for the ultimate audio experience. For High-Resolution Audio files, the digital amp and specialised tweeters reproduce every subtlety, so you can hear each note as the artist intended. For MP3s, digital processing software upscales compressed music to restore lost detail. Get 90W of powerful sound from a 2.1ch speaker system. Two mid-range magnetic fluid speakers deliver pure crisp vocals and complex melodies, supported by Wide Dispersion Super Tweeters which produce soaring highs and a wide soundstage. A powerful woofer works with passive radiators for resounding bass. So you can enjoy your music in clear, powerful audio, whatever the volume. Get big bass lines from a compact speaker. Dual passive radiators work with a 69mm subwoofer and react to the movement of air through the speaker, artificially creating space in the speaker cabinet. This space allows more air to flow through the speakers, enabling even smaller units to deliver superior sound — especially at low-end frequencies. And buy this Sony SRS-X88 Hi-Res Audio Multi-Room Wireless Speaker - Black Now £349.00.