Hi, I asked Jan the same question few years back and got the following answer:   "1.5 Watt/channel at 32 Ohm 1.1 Watt/channel at 100 Ohm 0.4 Watt/channel at 300 Ohm"   I'm now trying to choose between Jazz and Classic. I have HD600, but want to try Hifiman HE-400i's in the future, I...

Hi!   I'm looking for closed headphones that isolate well. They should have atleast 3m(10ft) cable.   I wouldn't use them outside, just in my home.   I have Sennheiser HD-600 and Lehmann Audio Rhinelander as my main setup. But I need something that isolates when there is noise...