Hi All I am relatively new to the audiophile experience, but I recently purchased a Fiio M11 Plus Ess, which was an upgrade from my Cowon Plenue D2. I love it, but I have 3 sets of headphones to use with it. Sony wh-1000xm2 (no issues), Philips Fedalio X2HR (love 'em), and Sennheiser hd650s...

Hi, I switched from the 32Ω Beyerdynamic DT 770 Pro to the Sennheiser HD 6XX because I can't stand the sibilance and the high frequency peaks produced by it. The DT 770 Pro's mids are recessed but it is bearable when compared to its highs. Its mid-bass and sub-bass are perfectly fine for me...