Having just reviewed the T51 p from Beyerdynamic on headphone day last Friday, I also had a chance to try out the A20 Premium Headphone Amplifier along with it. I would like to let you know that I am no audiophile, and so I don't really know the difference between good audio and bad audio. Think of it this way: a baby might enjoy the Baby Genius film series, but an … [Read more...] about A20 Premium Headphone Amplifier from Beyerdynamic