I just bought some audio technica ATH-m50x's. What would be the best entry level DAC and AMP to pair with these headphones? I have never had an external DAC or AMP just to drive headphones and have no idea what to look for. I do know a little something about the ones that include "tubes" because I played guitar for years and had tube amps. I know they need to be changed and messed with sometimes and I don't want that. I'm NOT looking for the cheapest thing I can get. I'm just looking for a "bang for your buck" entry level sweet spot. I don't mind spending around $200 give or take. Any suggestions or information from the audiophile community here would be greatly appreciated
P.S. I would also like to add a decent pair of open backed headphones in the feature and I would like the DAC/AMP to run those as well.