I am looking to purchase a desktop amplifier for my headphones. Curently I have a fiio e11 portable headphone amplifier, but when I am at home, I want an upgrade in terms of audio amplification. The headphone that I am currently using is the Beyerdynamic COP, but looking to get headphones that can get handle greater amplification as many of you know that it is a low impedance headphone. What options are there that are in a reasonable price range. I am looking for something no more than 80$, will go more if quality is greater, but would prefer to keep it around 40$.
Any Suggestions? Thanks in advance