Well, I'm actually getting great results from the Fiio E9 on the TH-900s. The setup for the moment with my TH-900s is optical -> Gungnir -> fiio E9.
The LCD-3s is a bit better off in terms of the setup I have for it. For the LCD-3s, it is: Optical -> Gungnir -> Mjolnir -> Q-cable -> LCD-3.
The TH-900s is still doing a damn good job holding up against the LCD-3s even with that setup.
I tried the TH-900s with the Schiit Lyr and some Matsu 6922 tubes and it just messed with the sound too much.
I'm having a HARD time deciding which one I like more. I can only imagine if I was to change my setup for the TH-900s to the Gungnir -> V200 amp.
Just my recommendation, be careful with your $2000 TH-900s + your Lyr. Don't want the "magic smoke" to come out of them like it did with my Ed.8LEs when I first plugged them into my Lyr.