I just picked up the Gremlin and I have been having a very interesting time with it. I have the Fiio FT1 and the Meze 109 Pros and I have been having an interesting time comparing the Gremlin to the Fiio K9 Pro.

The Fiio K9 having much more detail I tend to enjoy for gaming and some songs on and off that are more technical. The Gremlin on the other hand has been a really interesting experience being my first tube amp. I've found the more "full" sound on the Gremlin makes me want to listen to most music with them. Guitar strings and bass are just a joy on the tube amp.

I have owned plenty of Sennheiser's and while I love their sound their headsets give me a headache. Are there any headphones I should look into that pair nicely with a tube amp?