is the koss electrostatic headphone and amp on massdrop a good buy for $400?

Hi there I am new to this however I wanted to know what this electro headphone sounds like compared to something like an hd6xx how does electro sound compare to dynamic? And planar?

 

Please use below thread to seek advice

https://www.superbestaudiofriends.org/index.php?threads/the-all-purpose-advice-thread.19/page-435

 

Or read the thread that's already dedicated to this headphone: https://www.superbestaudiofriends.o...f-consciousness-review-and-measurements.6881/

There's also a couple of links at the top of the page that are definitely worth reading, such as this one: https://www.superbestaudiofriends.org/index.php?threads/new-members-introduce-yourself.17/

This forum works on very different norms to ASR or whatever it is you've been reading up to now.