"The TIDAL Akira multiway has a passive radiator array on back that is user adjustable to suit your room and a 5" diamond mid/woofer with 7mm excursion (a joint project of TIDAL and Accuton). This single midrange driver crosses over from the active woofers at 150Hz and covers the entire range up to 6kHz, where it passes the baton to the diamond tweeter.
In other words, it is very nearly a single driver speaker. And it has the purity of same. Very fast, very delicate, very clear on tubular bells, percussion, and wood blocks with just the slightest bit of diamond tweet glare on the very top, but also with simply extraordinary timbre and resolution in the mids. An outstanding floorstander." (Jonathan Valin, The Absolute Sound)