[TVPL]

Mid, treble clearly but bass hums...
I've checked again: Hias's update for Wolfson's wm5102 chipset, not for Digi+ with wm8804G and Milhouse's config is correctly (in overlay/hifiberry-digi.dtbo)

Are you using toslink connection? Is passthrough enabled?
What are you connected to? Have you ever had the hifiberry sounding good?

Sorry about late. I'm playing RPi2 in my car and connected following: HU(Head Unit) <-- HDMI <-- RPi2 & HiFi Digi+ --> S/PDIF --> Audison Bit Ten D --> Pioneer Amplifier --> Focal Speaker
- Pass through: disabled.
- Sound output through optical in Digi+ have the mid, treble, sound field and sound stage a bit better through HDMI, but more bass hums (with same preset in Bit Ten D)
- I heard that HiFi Dac sound better but don't try any more