When running my Marshall DSL 40 C at high gain/volume, or on clean channel with crunch engaged at higher volumes, there is a noticeable "splat", an odd sonic artifact that occurs--more specifically on the B note, 9th fret, D sting ( Standard tuning ). Could this possibly be a faulty/inferior preamp tube in the V1? Other than that, the amp sounds glorious, performs well, and there are no other issues. Thoughts?
It could possibly be the first or second pre amp valve, so we would recommend that you have it checked by a qualified engineer, if the unit is still under warranty we recommend that you take it back to the dealer you purchased it from.