I have the predecessor to them, the Kanto iPair 5 with the same 5.25" woofer, 1" soft dome tweeter, 20W/ch Class AB amplifier (versus the Yumi's 30W/ch) and remote.
The Yumi adds a 24/192 DAC and two optical inputs. I wouldn't give too much audio weight to the Bluetooth though, which is A2DP instead of the current state of the art aptX lossless protocol, so for now it is more of a convenience feature. Kanto tells me the next generation Yumi will have Bluetooth aptX.
Still, a good deal for a pretty good sounding set of full-featured 5" powered monitors.
Steve