I have been researching quite a bit a can't really figure out if I'll gain anything from adding a DAC,
I'm currently using an external soundcard connected to a tube headphone amp (darkvoice) with sennheiser HD650's.
I'm considering adding a DAC in between the soundcard and amp with optical. I've set a budget of $300 for the DAC. 1 of the DACs i'm considering is the Argon DAC1