Arriving shortly after JBL’s release of the $39 Micro II speaker, Matrix Audio’s Qube ($50) has a lot in common with that earlier small speaker conceptually, but goes in a completely different direction aesthetically. Both are monaural, single-driver solutions, built with rechargeable batteries, 3.5mm plugs for headphone port audio, and USB cables for recharging. Each comes with a drawstring carrying bag, and is small enough to fit in…
