I have a Schiit Vali and a pair of Q701's, i am using an e7 and a sound blaster Z currently but I am wondering if there would be much value in upgrading to a Modi (or similar DAC)   Thank you in advance

i am trying to get the best possible sound quality for music to my amp. I have Q701 headphones there is no way to turn off the amp on the headphone jack so i am not quite sure how to feed the audio to my amp's RCA inputs on the sound blaster Z i use an L7 to use line out to use the E7 as a...