reikidoFor some studio quality headphones, you'll need an amp to boost the signal enough to sound their best. Will they still work without an amp...probably, but then they'd sound like $10 headphones. It wouldn't be worth the money to get these headphones without an amp. The headphones will never reach their potential.
reikidoI'm still waiting for my headphones to ship, but I ordered a Schiit Magni 3+. Been using it a few days with my Skullcandy Hesh 2 Wireless and I can't believe how much better sounding even those cheap headphones are. So I'd definetly would recommend the Magni 3+. It's $119. You'll need a 3.5mm to RCA cable too, there's a bunch from various online retailers for $5 to $10.