Our all-time best selling open-back audiophile headphones, the Massdrop x Sennheiser HD 6XX is a replacement to the original HD 650 with a refreshed aesthetic & improved utility.
When I went from my 598 to 650 the improvement was quite noticable. Biggest thing is that the bass and lower frequencies on the 650 sound much more prominent, but also clearer. Also, yes, amp absolutely required for the 650
When I went from my 598 to 650 the improvement was quite noticable. Biggest thing is that the bass and lower frequencies on the 650 sound much more prominent, but also clearer. Also, yes, amp absolutely required for the 650