What's the best audiophile headphones for under $300 (used)?


There have been some incredible headphones launched a few years ago that still deliver amazing quality for the price and the great thing is that these can now be found for under $300 when they originally cost more than double when they launched.

Now the question is which are the best audiophile headphones that can be found second-hand under $300. What are the best price/performance models?

Here is a selection of some of the best within that price range:

https://www.linephaze.com/selection/2683900f-e9f7-406b-b365-95cb2b1e9ecc

Do you own any of these, and would you add any additional ones?

lionel_hersch

ABSOLUTELY 1000% NO DOUBT ON THIS PLANET & as already mentioned by @vrao81,the HiFiMan Sundara & you won't have to wear something already worn by someone with unknown hygiene...
HOWEVER,the HiFiMan Ananda Nano can be had right now for $319.00 & is a BIG step up from the Sundara with better staging & deeper bass!

I have about a dozen sets of headphones, with some costing 10 times what your budget is.  Having said that, the cans I listen to the most are the Sennheiser HD6XX.  They are super comfortable and easy to listen to.  The HD6XX is basically a HD650 with a slightly different look.  You can get them for under $200 at Drop.  Get some better earpads and get the Sennheiser balanced cable if your headphone amp supports it and you'll have a great set of cans.

I'm a fan of Beyerdynamic. The DT-770 pro x now has a detachable mini-SLR for easy cable swaps and I have always liked their sound. Sennheiser has some good stuff at that price like the HD6XX. If money if an issue though, you don't need to spend $300 for good sound and comfort. Kiwi Ears Ellipse are $60 and are great open-backs. If you want cheap closed-back, Try the Jade Audio/Fiio JT-1. The look good and sound great but the head strap starts flaking kind of fast. I use them when i mow the lawn because they have great isolation. Good listening doesn't need to break the bank. 

Just picked up a set of phones in this exact price range and I needed closed-back. Did lots of research..boiled things down to the  Beyerdynamic DT-770 Pro X and Sennheiser HD620s.  I chose the latter.  Still breaking them in, sound very good already.