Finally got it - again - the Sennheiser HD 650 !
I had this headphone 5 years ago but unfortunately kept it only one year. At the time I was playing a lot on PC and then replaced it with a MMX300 as I wanted a closed-back headphone for isolation... Big regret eventually. The HD 650 was also my first open-back headphone and overall my favorite signature.
More recently, since last year, I've been enjoying the Philip Fidelio X2HR but wanted to come back to the Senn
My current gear is a Fiio K5 Pro (DAC + Amp / AK Chip model), but was already thinking in the upcoming months to upgrade. I've looked many pages on this thread and was lurking at two models : Ifi Audio ZEN CAN Signature 6XX, or DarkVoice 336SE. Either to replace or complete my Fiio
Oh also a cable (short size, maybe 1,5M max) of course to get along with a new amp