[TrantaLocked]

I am using a USB DAC with the auxilliary 3.5mm input in my car. I assume this is line level which means high input impedance and a dedicated amplifier (but maybe not?). If I can get a high enough output voltage from the DAC to have enough volume with my car volume at less than 50%, will the DAC output power still matter at all like it does for passive headphones? The car model is a 2013 Honda Civic if that matters for the type of amplifier.

 

[technobear]

I am using a USB DAC with the auxilliary 3.5mm input in my car. I assume this is line level which means high input impedance and a dedicated amplifier (but maybe not?). If I can get a high enough output voltage from the DAC to have enough volume with my car volume at less than 50%, will the DAC output power still matter at all like it does for passive headphones? The car model is a 2013 Honda Civic if that matters for the type of amplifier.

You are correct that the 3.5mm input will have high impedance and power draw will be negligible.