The best sounding speaker under P2000, and under 100g! A bit larger than a ping-pong ball, the X-Mini 2 is a great successor to the original X-Mini, and X-Mini Max.
Decent size, price, sound, and battery life... this is a great accessory to have for anyone who enjoys listening to music. Having tried all the other XMI products, I have to say, that you can't really go wrong with any of them, but my personal choice would be the X-Mini 2 over the original or the Max.
The Original is smaller, and cheaper, so go for that if the size is an absolute priority, or if you don't really care for the additional sound quality of the 2. The Max is stereo, but it's larger and has a lot more wires to consider a portable solution. The Max is nice for laptop users looking for an acceptable solution for presentation work.
Specs state a 100Hz cut-off but realistically, it sounds closer to 130-50Hz, but again, for the price, and size, it's great. I haven't heard anything this small, sound this good...period. It won't replace great earphones, but it sounds way better than a lot of generic desktop computer speakers. And even sounds better than a lot of the entry-level JBL On-Stage products.
To get the best audio quality from this speaker, turn the volume on the X-Mini to the max, then half a turn back. Then set your volume on your music player to about 60-70%. This keeps distortion to a minimum, while maximizing bass response... the X-Mini 2 driver is strong enough that anything louder makes this tiny speaker rattle around your desk whenever bass notes are strong.