@ericrosenfield I agree with @pennstac consider headphones. I own HD650’s and with in the last year upgraded to ZMF Aeolus. Very nice step up from a long time HD650 listener. The detail and presence or rather immediacy with more slam was greatly appreciated. ZMF Aeolus won’t break the bank and not much heavier than Sennheisers. I like planar’s and have had the best models here in my home for extended periods. They were heavy and slightly more technical in their presentation over the ZMF’s which are musical.
MacBook/Roon–>USB AudioQuest Carbon–>Holo Spring 3 KTE DAC–>Quicksilver Audio Amp OR Pass WHAMMY Amp–>ZMF Aeolus or HD650
BTW I also own HD580 and they are absolute yick compared to the HD650’s and especially the ZMF’s. In every dimension the HD650’s beat the tar out of HD580’s. If you are not hearing much difference between the HD560 and HD560’s then you may want to upgrade the DAC first.
I host a popular local AM radio show and HD580’s are used exclusively as on air station monitors for the AM broadcast. No guest one wants to listen to the HD580’s after hearing even the HD650.
Not saying enormous groups of people aren’t in rapture with their 500 series headphones, just the spacing between what you already own should be wider in presentation quality.
More comments on equipment and “what’s next journey” from HD650’s:
CanJam events are terrific places to compare. I’ll be at SoCal CanJam next Saturday.