easy to drive, like... in easy to drive compared to headphones which actually are hard to driver properly like old Yamaha Orthos e.g.
The K701 need an amp, but they'll be driven fine by almost any dedicated headphone amp. But to make them sound decent you need some tubes to tame the 7k-10k spike.
people are well known to not actually know jack :D ... hell, there are even people who enjoy Grados (haters gonna hate)
Edited by roBernd - 8/23/12 at 2:49pm