Got this from Customer Service today. These guys rock!
V1 – input
V2 – lead gain
V3 – lead gain
V4 – clean gain
V5 – phase inverter
V6 – effects loop (behind front row of preamp tubes)
Just wondering if this is from Right to Left or as labeled on the PCB? On the PCB from Right to Left it’s V1, V3, V4, V2, V5 and V6 behind the front row.
THIS!! I did some tube swapping in every preamp spot with a Ruby 12AT7 V3 position yielded the absolute best results. More sweep on the gain dial, and revealed more of the gain's character and feel.Replacing V3 with a 12AT7X does miracles for this amp.... smooths the gain out and helps with the taper. In V2 it was too muddy but V3 was perfect!
For sure! This is my go-to tube swap when I want to bring the gain down on an amp - and all the PRS amps I've played have plenty of it. V1 could even be a nice spot for one, but it would depend on what the effect on the clean channel would be as well, because one half of the V1 tube services on channel, and the other to the other channel. IMO, every tube amp lover should have a little stash of 5751's to play with. The nice thing about them vs a 12at7 is that spec-wise, the 5751 is more like a 12ax7, whereas the 12at7 is relatively much less like a 12ax7. Tonally as well, the 12at7 sounds much thinner and more harsh than a 5751, in the instances I've tried them. Although, I don't think it will hurt anything to use the 12at7 in an instance where the 12ax7 is stock, as the way the specs work, from what I understand, is that the 12at7 can handle more. It's the reverse that can wear down a 12ax7 faster - I read it on the internet, so it must be true. In the spirit of modding something, I suppose if the 12at7 gives you what you want, and it's not hurting anything, by all means, do it. But I still recommend trying the 5751 in those instances as well, just to see what the differences are.5751-V2!