Audio Research Ref. 3, Ref. 5, or the Ref. 5se.

tsushima1,

Much appreciated on the tube replacement advice. In regards to  the fuse replacment, I'm not going to touch the fuse, I am happy the way it is! No offense, but I am no longer OCD driven and am content with my system within reason. However, I must add I am sort of let down by the Sovtek 6550 tubes that were with the unit upon purchasing. I developed a noise in the right channel attributed to a noisy output stage tube. Not the intermittent burps tubes occasionally develop, this was constant! This only after 150 hours on the unit. I called Audio Research and asked for 2 replacements just in case I had another issue.

 I replaced the right channel tube and was back to happy listening when suddenly around 300 hours the left channel did the same exact thing! I then replaced it with the spare tube. I am glad I asked for two instead of the one that they were going to originally send out. Since replacing the two that were bad, I have not had any other tube noises since then. I have around 480 hours on the unit now. 

Congrats Russ!  You are going to love it.
 
Please come back to this thread and give us a review.

I tend to recommend the GE 6550A as it is to me the best *All Rounder* its accuracy and neutrality certainly makes an excellent choice for Classical, Rock, Popular, Singer Songwriter, Film Scores etc .etc.

Were I to be contemplating an evening of Sinatra, Ella, Lady Sings The Blues, Jazz, Blues, etc. Etc. then I might swap out the GE for an Tung Sol Solid Gray Plate or an late 50's Black, introducing a touch more palpability, Tonal density and Harmonic bloom 

Great exchange of info here guys. Russ, keep me posted as you receive & break-in your Ref3. Happy Listening!