What exactly is the difference to the model one lower of this speaker from Sony? Only the size, the volume or also the sound? Or are only the light effects different?
A bit late, but what the heck... The differences are as follows: The design is round, no longer square. The length is slightly longer, but the weight is the same. The Sony charging port now also has a micro-USB for charging the box. The water resistance has been increased from "splash water" to "waterproof". Unfortunately, the sound quality has become somewhat weaker, at least in the bass range. This also applies to the successor models (tested up to XB43). It's a pity, as is so often the case, that exactly the most important thing has suffered with the new ones...