28-02-2020, 07:11 AM
If you have an efficient switchmode amplifier then because the average pwoer output is low on most audio material the power consumption will be low. You can defeat this by having highly compressed music and winding it up to loud. This will shorten battery life on the PC and the system may have to clip if the power output exceeds the USB port's capability for too long. How long is too long? Depends on how much energy storage there is in the amplifier. A big capacitor or small battery may be a good idea.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv