*This is my first ever review, so please understand that I am just trying to figure out how to write this stuff properly.   I bought these headphones second hand blind (having never listened to them), but took guidance from ZReviews' great review of them. These are my first open over-ear headphones, and my only other 'high-end' headphones being Sennheiser IE80s. I have them paired with the HiFiMan EF5 headphone amp, which I was able to get together with the headphones for $700AUD shipped, which was about $530USD.   What immediately struck me...