I set up the Model XS next to a Jambox and A/B'd the two speakers, comparing their sound quality. While they both have limitations because of their size, the XS came out on top. It could handle heavy bass at higher volumes better than the Jambox and just sounded a little smoother, more refined, and a little warmer, with more detail. Not a huge difference, but it definitely had the edge.
Of course, you should take all this with a grain of salt. As I said, these types of speakers have their limitations, and if you're expecting awesome sound from a speaker this size, think again. In the case of the Model XS, Jambox, and other tiny Bluetooth speakers--I include the Logitech Mini Boombox in this group--the idea is that they play a lot bigger than they look and sound decent enough.
However, you shouldn't expect to get deep, booming bass, and all these little guys have almost no stereo separation. There's some digital processing that's supposed to make them sound like stereo speakers, but they really sound more like mono speakers.
Those caveats aside, the Model XS is one of the best-sounding speakers in its class. While it can play pretty loud and can fill a small room with sound, it's better to listen at lower or moderate volumes and not push it too hard.
Like all speakers in its class, the XS will make harsh music sound harsher, and Geneva suggests you turn off all EQ settings, such as bass boost, on your iPhone, iPad or Android smartphone or tablet when you're streaming. There are no EQ settings on the XS; sound is optimized for the speaker and that's that.
As for battery life, the XS is rated at around 5 hours, which is not great but not bad. More disappointing is the fact that you must charge the unit with a separate AC adapter instead of a Micro-USB cable. This is a travel product, and it would be nice to travel with only a USB cable that you could plug into your computer, or the power adapter you use for charging your cell phone.
Make no mistake about it, this is a very good little Bluetooth speaker system with an excellent design that makes it a good choice for frequent travelers who want to stream music on the road or to augment the sound of their tablet or laptop speakers when playing movies.
The only issue for a lot of folks will be the cost. At $250, the Model XS is on the expensive side (or maybe I should say excessive side). The Jambox can be had for around $175 online and the Logitech Mini Boombox goes for $90. It also should be mentioned that Bose's excellent portable Bluetooth speaker, the SoundLink Wireless Mobile, starts at $299, though that speaker is significantly larger and heavier.
In other words, if you're someone who's looking for a bargain, this isn't it. But if you don't mind paying a premium for a good-quality product, you should definitely give the Geneva XS a long look. Aside from the price, there's a lot to like here.