When I was seeking my next headphone, I wanted a true upgrade to the 58x that would “sound good with everything” and also keep me satisfied for years to come. I could not be happier with the Aeolus. Every genre I throw at the Aeolus sounds fantastic (even poor recordings as Torq mentioned). It’s technically impressive enough that you can get lost in the details of great recordings when focused during critical listening. It’s smooth enough you can listen for hours as background enjoyment without getting too distracted from whatever else you’re focused on. It’s the only headphone I use now and I can honestly say the “upgrade itch” has left… for now, at least until I can afford a VC 
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I started with the JDS Labs Atom amp and while it sounded good enough, the Bottlehead Crack opens doors to new worlds of sonic enjoyment. Between tube and pad rolling, it never gets old.
