Hello!
I apologize for not answering you for a long time, as I needed a little more preparation before recalling.
Go!
F.Audio FA3s
1) The player turns on quickly, even instantly (3-5 seconds). If you listened to music on it, then when you turn it on, there will be a menu with a choice: continue with this composition or exit the menu.
2) The player with in-ear headphones has no heating at all, cold as ice. If you use magniplanar headphones, the player will already be warm, but not scalding.
3) The player menu is simple, navigation is fast. In general, there is a standard menu like that of cheap Chinese players - you can't watch YouTube from it. There are illogical menu items that I have not quite figured out. Also, for some reason, the item with the choice of filters was taken out to the main settings, although they could have added them to the settings during playback.
4) Firmware glitches - I and my Russian friends do not always play large files. For example, I cannot reproduce one 24/192 kHz album of the Fleetwood Mac, other albums with this resolution are reproduced.
5) Player control - I really liked the fact that you can program the wheel - either as a volume (very convenient) or moving tracks during playback (not very convenient). The buttons are pressed well, but there is one BUT - you cannot control the player when the screen is off!
You have to first press once to wake up the player itself, and then a second time to stop the track or select another.
7) SOUND SOUND SOUND. Frankly, I don't really like the DAC in this player, as it delivers calm and without emotional music. I miss the drive and drive in the lows and low-mids.
Now the general opinion on the sound: the player plays smoothly, rather with a slight emphasis on mid and high frequencies. The sound is large-scale, somewhat reminiscent of Technics products, especially musical centers (boomboxes). For those who do not like swotting and prefer calm instrumental music, it will do.
8) Digital filters change the sound by 0.01 percent
It rather affects not the sound delivery, but rather the scene, its orientation (wider, in front of you). Stock 5 filters + 1 filter that uses the equalizer (greatly spoils the sound and cuts the high frequencies).
9) POWER! This player has very good power output even on unbalanced output. It's so powerful that it can fly my full-size magnetoplanars.
10) As for me, only dynamic headphones or magnetoplanars are good friends with this player, since I did not like the high frequencies on reinforcing headphones, and the bundle itself plays a little dirty.
11) I almost forgot - AUTONOMY! It is very large, very straight. I do not know how they did it, but with such a high output power, the player was made autonomy above 15 hours (honestly, I could not discharge it quickly).
My subjective conclusion is that the player turned out to be interesting, but, as for me, it would need to improve the firmware and add massiveness at low frequencies.