Looking for a great set of Wired Headphones

Fyi, here’s a review of the Sundara from a very knowledgeable and reputable reviewer and not some YouTube hack…

https://soundnews.net/headphones/full-size/hifiman-sundara-closed-review/

Heres a review of the R9 that’ll give you a good idea of its sound characteristics as well…

https://www.headfonia.com/hifiman-he-r9-review/2/

Bottom line, if you want a warmer, richer sound within your headspace the R9 might be good, but if you’re looking for a more balanced, tonally accurate sound that gives you a larger soundstage that goes outside your head the Sundara is a better choice.  I think the Sundara is a better headphone, but it’s all personal preference and that’s totally up to you.  The Meze is also very much worth a look.  Hope this helps a little. 

What is your source going to be? Do you want to make sure that the headphones if I have complementary sensitivity and impedance.

Focal are really good and easy to drive. What headphone amp and source do you have. Like all things audio you need matching components to get the most out of it.

if you are actually just using an iPhone or something like that then look at Ultrasonde they have some amazing headphones that can work of with very low quality / power output.

These guys live and breathe headphones:  

https://www.reddit.com/r/headphones/

What is your budget?  There are lot of great cans out there.