I plan on buying the m8 xl4 in a few weeks to use for my hd800 and ipad but I also want this dac/amp to be used for my computer at home.
1. Can I actually use the 1/8 out for my powered speakers? (swans t200b)
2. If I plug the m8 to the power outlet will it still use the built in battery?
Actually, for #1...if they are powered speakers, they need a line level input. The M8 is perfectly capable of providing that from the 1/8 jack. I believe mid gain, and volume maxed (or near max?) on the M8 gives you that level.