My V3 has some annoying issues:
1. Player menu sometimes randomly disconnect my SD card, so I can't reach my music files for a while. After navigating forward and backward in menus or after restarting V3 it detects my SD card again. I think that it is system glitch or bug, because I tried different SD cards and had the same issue from time to time.
2. Tidal music app disconnects user login data every time when I restart V3. Each time when I power on my V3 I have to type Tidal username and password again. Also Tidal app has noticeable lower playback sound quality compared to when I'm using Tidal from my Smartphone connect to V3 via usb as a D.A.C.
3. The most annoying issue is volume level control harware or software glitch. System automaticaly keeps increasing or decreasing volume level to the max or to the zero level. This happens when I quickly push volume + or - buttons to increase or decrease volume for 5 or more steps at one time. This does not happen when I push volume + or - buttons slowly and only couple steps. I set my max volume much lower because of this issue, preventing not to damage my hearing or headphones.
Despite of these issues I really like V3 sound quality and how small and powerful this little DAP is for the price. I'm using it mostly as a DAP when going outside for a walk, but also often using it as a DAC connected to my Smartphone and playing my local and Tidal music files with UAPP or Neutron, to increase sound quality even more. I was really surprised how good it can drive my Focal Elegia and Clear headphones via 4.4 balanced output at High Gain and only 50% volume level. The sound is musical, well controlled and with quite good level of details and technicalities, regarding its price. This DAP reminds me my old DAP "Zishan DSD AK4497" - it was also very musical, quite powerful with good technicalities while keeping the small size factor, which I really love.
I wish Tempotec some day could release top tier DAP with ESS9039PRO or AK4499EX with powerful amplification section, keeping similar compact design, musical sound signature and affordable price.
I wish all the best for this company in the future.