I'm using the T1/Mjolnir combo and I can tell you that imaging and soundstage is superb. It's the most convincing combo yet. It's like Dolby Headphone without the processing lol. After 30 minutes of listening to them on the HA-160D and B22 (friends) i would get listening fatigue. I haven't experienced fatigue on the Mjolnir at all! The only amp I've heard that can hold a candle to the Mjolnir is the Violectric, but I think it will get pushed out the spotlight in a few weeks once more reviews and impressions are in. I sometimes find myself turning up to louder volume than I should because its so clear and life like. The music and detail/transients just pour in that no sub $1k amp on the current market can come close to. The unit runs cool for quite some time, but after several hours of heat pooling up, it does get a bit hot. Mjolnir's heat sinking ability is very well engineered and really isnt a problem at all. This is also in a ~78 F room.
I can't stress enough just how convincing the Mjolnir+T1 pairing really is. It's a match made in heaven for sure. There is a very flat sound signature, unlike the V shape of Burson units. The Burson units sort of put the vocals "outside" your head ,but they are actually hurting the SQ in the end. The Mjolnir is more of a " \ " bass tipped curve, but doesn't drown out those ever-so-fine treble details and transients. That means a very flat frequency response for those neutral-nazi people out there. However, it doesn't try to get in the way of the music like Burson and others do. I'm done searching for headphone equipment for atleast a year, I might occasionally login to headfi now. That is the only compliment a manufacturer needs. Yulong D18/Mjolnir/Beyer T1 combo = Peace out HeadFi. Thank you Schiit!
That's funny. I find the β22 one of the most "FUN" amps to listen to. That means I can listen to it for hours on end with a hint of getting fatigue. This is with the LCDs, T1s and the HD800s. Oh well..