Count me in the camp that uses a Rogue 99 pre, but currently driving a Plinius SA-100 Mk III (100 wpc SS amp). I did a lot of listening, also during a search for a system for my brother. I am tremendously satisfied with the Rogue, and the Plinius for that matter (and don't get me started about how much I like the new Coincident Super Eclipse).
Anyway, point is that we compared several pre-amps in the same system (mostly BAT, but unfortunately no ARC), and the only thing that topped the Rogue 99 was an Air Tight unit (point to point wiring, but no remote or phono pre) that was about $4,000 used, as I remember. At that it was only slightly smoother around the edges, with the Rogue definitely holding its own in the lower regions. Moral of story: I will eventually replace the Plinius with tubes (although I am in no hurry since I am enjoying this amplifier quite a bit), but I can't say I feel any need to replace the Rogue 99.
Hope this helps, and best of luck.
Anyway, point is that we compared several pre-amps in the same system (mostly BAT, but unfortunately no ARC), and the only thing that topped the Rogue 99 was an Air Tight unit (point to point wiring, but no remote or phono pre) that was about $4,000 used, as I remember. At that it was only slightly smoother around the edges, with the Rogue definitely holding its own in the lower regions. Moral of story: I will eventually replace the Plinius with tubes (although I am in no hurry since I am enjoying this amplifier quite a bit), but I can't say I feel any need to replace the Rogue 99.
Hope this helps, and best of luck.