Absolutely right! Look at http://www.by-rutgers.nl/HeadPhoneAmp.html Success!

I just bought me a HD 650 and listened with it via my home brew 30 watt amp:   http://www.by-rutgers.nl/SSA-30W.html   It sounds so good, much better than the old 'HD 250 linear II', and in opinion also better than the 800!!   Of course for a headphone amp. I could leave out the...

If you bild yourself a simple good amp (look in the book of D. Self: Small signal audio design, starting with two 5532's in parallel) you will understand that there is no difference between a good amp and a good amp. Do not let you mess up by costly amps... in golden cases.