How long do the batteries last on my BitHead?
A. Depending on the type of headphones that are used and volume levels, the BitHead can generally be powered for approximately 40+ hours on four high-quality AAA batteries. Headphones with lower impedance will last longer than headphones with very high impedance. We have heard some users get nearly 60 hours of battery life with very efficient headphones (such as ear canal earphones), while other listeners may only get 35-40hrs with very high impedance 300-Ohm+ headphones (typically larger audiophile designs).