jamato8
Headphoneus Supremus
They don't provide for the slow warm up of the tubes and hit them pretty fast with current. Also you will be listening to a solid state rectification and most likely not the highest quality. The voltage drop won't be as much so your 6DE7 will be seeing a higher voltage. Bass could be tighter but hard to say. The more "punch" is because you are running everything at a higher voltage. This could be fine or not depending upon how close to max the tubes are being run. Try it out and let us know.