Yea, "Everything in life (and Audio) is a balance."
- On my 160 I can get 10+hrs using the 3.5mm Out, no Wifi, No BT, And screen off with 16/44 FLAC files.
- But switching to Balanced out drops battery life to 6Hrs.
- I can see how streaming from WIFI, with BT on, and Running higher bitrate files would drop to 4hrs... Especially if screen is also on much.(Does help to switch to the lower resolution screen setting...)
* I'm sure that iBasso could make a 160/170 sized unit with 20hrs battery life (3.5mm), but sound quality would drop somewhat lower (And be like everyone else).
* And doubling battery size could be done to double battery life; but the size would increase...
Every decision or choice has both positive and negative consequences.