After several hours of pre-listening to an eclectic playlist for me was although the Denon sound winner, the Sony, however, was very close behind. The sound is clean (which especially in classical music comes to fruition), in low tones but unfortunately weak - because of a Denon impressive volume builds on despite small size. The "Sound" option enhances the stereo effect which makes the sound of a little work "easier".
Although I decided at the end of another speaker, the Sony a huge advantage: you can place the SRS-X3 to an arbitrary point in space and has from all angles equally good sound. He also has extensive operating options, without the need to remember keyboard shortcuts crude. And the NFC pairing is a fine thing in everyday life.