Yes, I didn't say they lost their character. :) There's still a lot of the HD650 bass. It's even better since Hugo makes bass sound much clearer as it makes music more transparent. It doesn't magically turn HD650s to terrible (imho) Q701s.:)
I have the stock cable. I like the sound this way, besides I'm afraid the sound might change as Zorrofox said. Everyone raves about the Cardas cable but I'm not sure the difference can justify the cost.
Right now I'm listening to Dr. Dre - The Watcher on Hugo-HD650 combo and the bass is amazing. :) I don't like who Dre's become now but 2001 album is very good. The mastering quality is outstanding.
One last question,sorry I should have thought of this before.Hugo/650s,plenty of headroom? Hugo drives the 650s with ease? Thanks.