OK, which one?

Nano. No contest. Bluesound gives great customer service and has been married to the streaming format for a long time. BTW I think AI has lots of limitations and wouldn’t use it much while deciding on my audio gear. My two cents…

I used the last "schematics/image creating A.I. by Google :

https://chatlyai.app/image-generation?utm_model=b_nano_banana

For sure we cannot use A.I. without verifying it . this is an evident proof...

my goal was only providing a gross schemas of what was proposed...

I asked explicitly  the OP to verify the facts...

I could not imagine it will be so bad, but it is an "image" generator, the last from Google ,  not a LLM A.I. 

My goal was only giving a schematics view....

In my experience with Grok  we must verify everything it claim... My own review of the K340 was used when i consulted him as "fact" ... 

I really don’t know where did mahgister pull the AI information from. 

this thread is confusing.

The DAC in the WiiM Ultra is good enough that I sold off all my stand-alone DACs, all of which cost significantly more than the Ultra.
 

Get both and return the one you like less