KEF has launched the second generation of its Muo portable Bluetooth speaker, bringing a host of potentially significant upgrades to the 2015 debut model. The original Muo earned praise for its clarity, timing, and musical insight, securing a What Hi-Fi? The company's Music Integrity Engine DSP processing, previously found in larger hi-fi speakers like the LS60 Wireless, has also been integrated. Multiple Muo speakers can be paired for stereo playback, and future Auracast support will enable multi-room functionality with compatible devices. MORERead our original KEF Muo reviewOur pick of the best Bluetooth speakers you can buy right nowWhat is aptX HD Bluetooth?