The HD 650s arrived today. I'm still waiting for the Russ Andrews cable.
First impressions out of the box with Audiolab M-DAC and Lovely Cube from source Samsung Series 7 laptop and MediaMonkey. Warm and fuzzy with a bass bulge. Already though, there is a welcome relief from the tizz that the Q701s have. Also, there is an uncanny focus on the musical line - the sound has many faults at the moment, but it makes me want to listen to it.
After three to four hours burn-in with music and pink noise:
Wagner Götterdämmerung 1951 Knappertsbusch CD Testament SBT 4175. Poor recording. The HD 650 find the music. The Q701s are more revealing of detail in a sense, but the sound is bright, but a little starved in depth. The Sennheisers find bass frequencies which completely elude the Q701s. Both cans have merits.
And now for something completely different.
Tom Waits - 'Hold on' from '"Mule Variations" streamed from a FLAC file on NAS storage. I always loved the sound of it through the AKGs. Starting again with the HD 650s. I think that I'm getting an impoverishment of detail and a slightly imprecision in stereo detail. Warm, fuzzy and musical again. Q701s - lots, lots more instrumental detail, great clarity, more soundstage side-to-side but rather two-dimensional. The HD 650s have more warmth, passion and depth. I think that I can hear the sound improving as I listen (or is it me getting used to it?). This is on 3-4 hours burn-in.
I'll leave it at that for now. I don't want to outstay my welcome! Thanks to all of you for sharing your love of music, sound and beauty.