To you it may be the future. To me, it is a retrograde step and does nothing to advance ultimate fidelity. It is an attempt by a pigeonholed (but excellent) company to be 'relevant' with the minimalist crowd who yearn to live in spartan, converted warehouse apartments, with little or no idea other than what they read in the latest hipster magazine while getting their latest haircut.
I mean seriously, look at this clown... This is their marketing image. What a joke.
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Speakers that size (the floor-standers and the stand mounted bookshelf ones) are likely to be placed optimally (one would hope) and not moved around much, (except for that awesome rooftop party with Harry Hipster and the Kale Brothers on NYE 2019) so what does it matter if there is a power cord to a high energy supply (AC mains)? Your battery idea is sweet, but not remotely practical or powerful enough for even a modest system.
Apparently it 'boasts' a 250W output for the earth-shatteringly long period of 5 seconds for "massive movie explosions". Give me a break, 5 seconds! Wow, I'm amazed. Any decent power amplifier can do that all day and all night, with peak outputs many times that.
I guess if you think streaming over a BT or WiFi aptX lossy connection is good enough for you to be classified "it's HiFi no question", then I guess we are poles apart. (have you ever looked at dropped data in audio over WiFi- it's scary)
DALI is a speaker company that produce some really nice gear (I have some) and I'm glad they are jumping on the lucrative Class D powered bluetooth, hipster, all-in-one solutions to problems that didn't exist, but to declare this crap the 'future' of HiFi is a bridge too far.