Wow, this is a hard / easy one for me as an owner of the HEDDs for a few weeks and someone that had the HD800s here for a week and sent them back because they were too thin, not enough bass for me and what my listening profile is…
I have stated this in many of ny experiences with the HEDD’s, I use a Schiit Jotenheim mostly with a balanced cable on high gain and the experience is 10/10. Abosulutely superb.
Can it unseat the hd800…much talk on this and most state the soundstage on the 800 is still “better” or larger than the HEDDs…IMO the HEDD’s soundstage, maybe as not aswide, but it is really wide laterally and the imaging and ability to seperate instruments and placement is as good as and even better than the 800s’
Bass, which some state they think they need 1-2dB below 60 hz or so to more closley match the Harmon curve, I find it does not need that to please me. Its not a Boomy or has a bloated or exagerated bass at all…when its there (Fanfare for Comman Man, Kettle Drums, Brian Bromberg. Bass Cello, Wood and things like low frequency organ music below 30hz, when cranked up the Bass is just blanking SUPREB. Period. Over and Out. That good…
They are very fast, transients are electric fast…resolving, very much so, anything thats in a recording you will hear.
I have the Focal Clears, and never had the pleasure to listen to Utopias…but most folks indicate they are equal to the detail retrieval of the Utopias. They are as good if not better than the Clears IMO.
Your amp should be able to drive these from what I can tell…on the Jotenheim with balanced at 9 oclock on high gain the vol position is at 10 oclock and its loud. 85 db…on high gain its 8 to 9 oclock.
The immeddiate thing with the HEDD’s is their “realistic” open live soundstage or experience…its like speakers in you head.
They are just a very different sound from the Focals and any other headphone…
The only negative thing IMO is the weight and fit…some have real issues with these things.
I am very fortunate to not have any fit or hot spots, and use these as my daily drivers now and the Clears are just sitting there asking me “why?” LOL
Good luck with your choice!
Alex