Streaming audio... plus sound quality
I’ve reviewed a few of these types of speakers. Pioneer calls this one a “Wireless Speaker” but that’s not really adequate for the category. Music streaming speaker (MSS?) is probably more accurate, if less pithy.
Either way, my experience has been that for most, it’s function first, quality second. As in, you get sound, but it’s not very good. Unless the MSS has some sort of special attention paid to sound quality, I try to avoid them.
What got my attention with this one, then? Well, the A4 has been tuned by none other than Andrew Jones, and given how amazing his inexpensive Pioneer speakers are, I figured this doodad was worth a look.