1. Stax Lambda Nova Signature/Stax SRM Monitor and Mysphere 3.2/Fidelice DAC and preamp. Can't decide which is better. The Stax is an old favourite and seems to do everything well. Maybe a slight loss of dynamics, which the Mysphere has in spades, despite a bottom end roll off even with the "B" pads. Both are also very "fast", but the Mysphere is the faster.
2. Focal Utopia and AKG K812 - The Focal is a superb headphone to listen to (very dynamic, tonally well balanced without brightness and easy to power); the AKG K812 is very close to level 1 however - it's better louder to compensate for a slight bass roll off. I don't hear the supposed faults in its top end. It just sounds right.
3. Beyerdynamic T1.3 - there's something unnatural about the bottom end (too much "junk in the trunk"), but it's a whole lot of fun. Great dynamics however - you can both hear and feel the shock wave. More balanced when quieter.