Quote: great, thanks for the advice! noob question.. line level signal?

Hello, I'm a begginer, no real experience with dacs or headphone amps before. I recently bought a pair of Grado sr325is (upgraded from a pair of sr80). I wanted to but a cheap dac to see if it was actually worth the spend, so I bought a fiio e7 (works as dac or simply headphone amp). I listen to...