NAD 1987X 50W Plexi RI with Pat Sullivan Mod???
I just bought this amp last night from GC. It was advertised with the Pat Sullivan mod but no one there could tell me what the mod was. The amp appears to have a power scaling knob on the back panel (in one of the speaker outputs) and a small toggle switch on the front panel. The back knob seems to cut the power and doesn't perform like a master volume. The front switch seems to cut the power even more but the sound degrades.
It has great-warm tones at low volumes using the back power scaling (I think) knob.
This maybe my favorite Marshall yet. I get to crank the amp tomorrow when the wife's away and it should confirm my thoughts.
Is anyone familiar with this mod? I could not find any info on the web.
Any info would be appreciated.
Thanks,
Doug