I recently acquired a pair of Sennheiser HD650 headphones, used. I connected them to a Schiit Audio Bifrost DAC and Schiit Audio Asgard 2 headphone amplifier.
I found the sound, after a 48 hour break in, and 3 days of intermittent listening to be far too lean and tight. Very little warmth to the low end, no low end volume so to speak, tight mid-bass but overly emphasised vocal mid range and shrilly top-end. At high level listening to the high end becomes lost in a wall of noise. I also noticed vocals caused the headphones to distort at high level / mid-high levels, as if the drivers could not handle those frequencies as efficiently.
Eventually I had to remove the Asgard 2 amplifier and connect an ultra-warm NAD3020a integrated amplifier. Sound was greatly 'improved', much more warmth and bass added. However clarity has somewhat been clouded.
I'm wondering, as the music I listened to was both classical and electronic whether there are any good alternative headphones that will provide me with both the warm, clarify, punch and depth that I so desire.
I've been looking to trade the Sennheiser HD650's & Asgard 2 amplifier for a pair of Audio Technica W5000, however I've read that some people have said these have little bass also?
Perhaps maybe a pair of Denon AH-D5000 would suffice with their bass impact?
I found the Asgard 2 to be under-powered, however it might be because the HD650s aren't very sensitive, I had the volume knob 90% full when listening. Perhaps I'm used to a closed-back design, and the perceived wider sound stage is forcing me to increase the volume to attain the punch I desire.
Any help and information would be greatly appreciated.
This is my first foray into hi-end headphones, although I've been a hi-fi enthusiast for many years.