Thank you for the input Kubo..   I posted as similar thread on another forum and there I was told that the M50's wouldn't benefit much from the Dragonfly and that I needed better cans to be feel a difference. It was suggested I'd upgrade to the Sennheiser Momentum, which I think I will have...

Hi everybody!   I own a pair of Audio Technica ATH-M50 and I have a pair of Audioengine A2's.   My source is a Macbook Pro. I listen mostly to 320kbs MP3's, but also Flac and Apple Lossless when available.   I am looking for a cheap way to upgrade my modest setup. I was thinking...