Did you ever get a tube amp? I finally got mine. I went to CanJam Socal with the express purpose of buying a great tube amp to pair with my VC. I found it in the Ampsandsound Rockwell. It was the best amp pairing with the VC to my ear at the show. I finally got it and I couldn't be happier. My VC has never sound better. It's a significant upgrade from the Kenzie, Forge and Pendant SE. And, it has 5 headphone taps for 8/16/32/100/300 ohms and I am using them all. You get a nice and subtle change in sound simply by changing taps. The VCs really have a wide sound stage and with the Universe Suede pads, the bass is deep and hits hard. Vocals are sublime. The tubes really enhance the euphonic sound of the VCs while maintain great imaging and clarity. And, it can drive the Hifiman Susvara which I recently picked up. Between these 2 headphones, it covers all of the music I listen to. So happy with my decision to get the Rockwell.