The Premium Compact Wireless Speaker Your Music Deserves Mu-so Qb 2nd Generation is the latest member of the award-winning Mu-so wireless music system family. Re-engineered from the ground up to create our best compact wireless music system yet. Combining our 46 years of hi-fi expertise with the very latest technology, extensive software and hardware upgrades deliver a significantly enhanced performance whilst the design has evolved to perfectly match Mu-so 2nd Generation. Mu-so Qb 2nd Generation is available from a wide range of retailers.