I think tube rolling, Hexfred diodes and new in/output caps will make a very nice upgrade. But the limiting factor in the LS7 is the power transformer which is rather small.
I had the LS7 but moved up to the LS22, the transformer is twice the size of the LS7 and the LS22 is also a balanced circuit which means double of most componets.
I had the LS7 but moved up to the LS22, the transformer is twice the size of the LS7 and the LS22 is also a balanced circuit which means double of most componets.