I've been comparing my newly arrived lcd4s to my well broken in LCD-3f via Burson Soloist and Sony Dap ZX-2 as source component. (Rock,Grunge, Chill and EZ listening via Tidal)
Without going deep into details, I still find the LCD-3 to be more engaging. More musical. More toe tapping. I am quite confident in this ,speaking for myself of course.
No attacks please! Just saying what I hear at this point. Let's keep in mind that we're talking 4 hours of listening to the 4s vs 10 months on the 3s.
1. Comfort. Less comfy than the 3s on my head. Heavy. CF headband no more comfy than the old one. The 3s feel light now when I grab them to compare sounds.
2. Build quality. Fantastic. The addition of that pressure relief spacer between earpads and wood ups is well executed. Not ugly as someone once suggested.
3. Beautiful presentation upon opening , white gloves and all.
4. Much harder to drive than the the 3s. I need 6 additional volume steps (these are course steps too) on my Burson Soloist for same output.
Back to the sound. It's all Audeze no doubt. They have pulled back the midrange from the 3s a bit . Still great, but I think it's that extra dab of cream that the 3s possess that I crave for total immersion into the music. Perhaps that will change in time as diaphragms break in. I am also hearing slightly more grain in everything. The 3s are just butter in a good way in comparison. Not huge and again, this may settle over time.
Bass is a bit more deep, authoritive and impactful on the 4s. Overall, a bigger
sound with a bit more depth to it. High end more extended.
Massed instruments sound nicely separated on both headphones equally to me.
At this point I would call them neutral(ish) done right. Not boring! Faster sounding than the 3s.
As revelations arise, and I'm sure some will, I will surely post those here.