@Dobrescu George How do you like? I'm waiting for mine to show up.
The sound is warm, smooth, the mids are warm, enthusiastic and sweet, the bass is really good, goes quite low and it is well controlled while being strong, while the top end is smooth and very polite. The sound I listen to usually is brighter and drier, but F5 is really enjoyable with its original signature, especially with songs that you want to sound friendly.
My wife is in love with the sound of F5 - she told me that she will be getting them the moment I finish writing my review.
Excellent compatibility with party music, happy songs (acoustic, pop, K-pop, J-pop), electronic, dance, and bass-driven music.
Most listeners will fall in love with F5 at first listen actually, it is a very popular type of sound that goes well with the large group of average listeners.
Definitely have to commend FiiO's efforts on including so many useful extras in the box and for including balanced cables! Many people wrote before that F5 sounds much better balanced, but I'm still waiting for a balanced DAP to arrive (have a few coming over, )