deHavilland Ultraverve tube preamp. Simple, solid, really nice sound. Uses four tubes. The one 6sn7 tube gives this preamp its signature voicing. I prefer vintage GT's, and military 6sn7's. Point to point wiring. Nothing fancy, just solid with a great musical sound. My philosophy is to "keep it simple". I use the tubed deHavilland preamp with a Bryston 14bsst solid state amp. I love music and am always looking on how to improve the sound quality...but honestly, I don't think I can make it much better relative to my room. I also run my steamer/DAC through my pre...not a hint of digital brightness and no musical fatigue which I attribute to my deHavilland Ultraverve.