No question about this recommendation, check out Don Sachs’ tube preamp. The preamp is custom-made, based on 6SN7 tubes and is the most satisfying amp I have ever had in my system, which include Modwright, Belles, Berning, and a upgraded HK-CI. It is detailed, transparent and has incredible extension on both the low and high end and a luscious mid-range. Google "Don Sachs" and you can learn more about his wonderful preamp, which is right in your price range. Support the boutique manufacturers, is my recommendation. Whitestix
