Stltrains, Gammajo and Sherod. Just wanted to add these observances that I experienced with my AH 2.0n. I added extra copper shielding between the power board and the tube board thinking it will make improvements. All it did was to remove the "air" or "breath of life" from the instruments making the sound more sterile and flat. The Loss of immediacy and refinement was too much to bear so I removed it and my sanity returned.
This preamp is already properly dialed in and I believe that if Joseph wanted to produce an all out state of the Art pre, this would be it with other refinements like a true seperate and robust power supply. He has everything else right in my opinion.
By the way I have both circuit boards isolated and floating and recommend it highly. The cca's are another must upgrade that all AH owners should do.
As to the break in period, I wonder if the new wiring is the culprit here?
