Are there any recommendations for a DAC (and amp) powered via USB? Ideally something small and portable.   I have a work supplied laptop and travel quite a lot, so carting around additional power supplied is a non starter. I did try a Dragonfly, but it lasted 2 days before it went back. I...

Hi all, hopefully someone can assist with this request. As a long time audiophile, I have only recently got back into portable music players. My last portable used tapes. Anyway, having recently purchased a Sansa Fuze and the required components to build a Mini3 amp, I need to assess headphones...