I received my Baltic March 23rd with Phillips 5R4GA Rectifier, JJ 6sn7, and Psvane 12AU7-S. I did not get a gain switch even though it was advertised on the website as having one. I am satisfied with the set 3 v gain, works for me. I noticed a recent add on Audiogon which states a hi/lo gain switch included, no option listed. I have been burning in with 3-4 hours daily about 4-5 days a week. I am not in a rush. I did try a few pair of Ken-Rad and Tungsol NOS tubes, the Tungsol being the better match for my taste. The JJs sound pretty good so far with the Tungsol having better bass definition and dynamics, but not by much. I do not have an alternate rectifier yet.