Got the mjolnir/gungnir stack on thursday. I feel the combo adds just an extra push of energy for the LCD's, they dont sound all that dark to me anymore. I don't want to go into too many specifics as I only have had a few hours to listen so far but first initial impression was energy, the sound feels more engaging to me out of both the LCD 2 and 3's, and more detailed from what I was getting from the Lyr. I'm using optical out of my imac for the gungnir, I haven't tried to usb to see if there was an SQ difference, doubt there will be.
Agree! The Mjolnir and Gungnir give the LCD's a kick that takes them from dark to very neutral, but energetic. It's a more detailed and dynamic sound than what you get out if the Lyr--sort of a workout for your ears and brain. Intense and engaging. Either I've burned in or the equipment has, because the sound is a little less edgy than my early impressions. I just re-terminated a Sennheiser cable for my HD650s with a 4 pin XLR and the Mjolnir & Gungnir work some of the same magic on the HD650s.