<https://www.head-fi.org/threads/sennheiser-hd800s-or-hd800-with-amp.857722/>
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"I am looking to upgrade my audio experience. I know there are diminishing returns but I also know from experience spending a bit more can make a huge difference. I originally started out with a Fijo X5 paired with PSB MAU1 headphones which I..."
<https://www.head-fi.org/threads/sennheiser-hd800s-or-hd800-with-amp.857722/#post-13658174>