high impedance, 150Ohm
Transparent, smooth sound
Comfortable traditional design, NOT in-the-ear
Ultra low distortion for hifi or professional monitor
Hifi headphone can grade sound stage
PK1 earphones are the ultimate traditional design with top sound quality. Driving by a head-amp, or even some high output portable audio like Ipod or Iriver, this monster can give you a feeling as top grade hifi headphones, not like average tiny earphones at all.