JOMAN
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Thought that I would put this in here although it is related to the recent Cryotube tube rolling in my CSP3-A.
With the increase in gain that the 12AX7-WCM Long Plates added I found the sound a little overwhelming. At first it was incredibly impressive, but after a while it was a little too much, especially the bass. I also had to take into consideration that my Vintage 8HO speakers were now well along in the break in, although with a ways to go still.
I did two things: 1, adjusted the speaker position, wider apart by one foot, a little more toe in and a couple of inches further into the room. 2, Of more relevance for this section is that I rolled the input VR tube in the UFO25. It was a Raytheon 0C3W, now I have the Sylvania OD3W in that position.
I wanted to know which made more of a difference so I rolled the Sylvania VR OD3W and the Raytheon 0C3W after I had re-positioned the speakers. Both charges were necessary, however, I would say that rolling the VR tube made more of a difference.
The bass is still the best that I have had with the entire frequency spectrum being more coherent and resolving without being over the top. It's gone from being initially very impressive to being even more engaging. In that regard it is even more impressive than before.
Interesting the rather large effect that a VR tube can have.
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