Thanks for the input everyone.
saisunil, you are right about the HE's needing some serious power. As the budget allows I will be looking to upgrade.
One of the reasons that I mentioned using a vintage receiver was that there is some talk on the vintage circle about the ability of older equipment to drive headphones.
SteveFord, I never gave that a thought! I will send Jack a message and see what he can do if anything..great idea by the way!
raddar, well elevated levels to me means higher than I would normally listen to. I know that previous headphones, Grado 325I's could be very loud and I would not hear what I am calling distortion. I may well be out of my depth here as I'm finding out how little I do know.
G Georgopoulos, thanks also for your input. I asked the question because reading so much of the information on sites such as this I find it difficult to get a consensus of "Proper Equipment Pairing".
hibuck, what you said about good material and poorly recorded music is also what I am experiencing. These headphones really work well on good recordings. I did not realize I had so many poorly recorded tunes!! I believe you will enjoy the WA6, would like to hear your impressions of the amp and tubes when you have had some time on them. Very cool!
Equipment wise, I am certainly not on par with most but I don't feel the need to compete. I cannot find much to fault in the way of equipment I have. Not high end by any stretch but nothing to be ashamed of either.
I am surprised that the audio from my soundcard is not as good as coming from my Oppo. All of my files are ripped as Lossles so I shouldn't be missing anything.
Could this be where I concentrate my efforts? Dacs, preamps, whirligigs?
Feeling like a complete noob in this hobby but I am enjoying the learning/listening/learning process. I will hang on to the 500's and continue using them and will upgrade as I go. I do enjoy them but will probably look for another pair to also use, maybe some DT990's.
Thanks everyone, Bob.