Thanks. I unticked disable audio effect and rebooted. I ony have speaker mode in audiofx app and those 2 settings, Bass and Virtualizer, are not supported in speaker mode.You can "untick" Disable audio effect in PHH Treble Settings(reboot). Enter AudioFX.app and while connected with headphone set, set Reverb: Bass and Virtualizer to 0%.
P.S. After those adjustments audio/sound initialize with delay(couple of seconds). To ged rid of the delay I enabled Phh Treble settings>Misc features>Force-disable A2DP offload.
Should I have a headset mode in audiofx too?