Audio Research SP-15, either stock or GNSC?

I bought an LS-15 about 2 years ago and had GNSC rebuild it. All I can say is that I didn't like it, stock, and was quite surprised with how much difference Steve Huntley's mods made. Steve is very serious about building the sound from the bottom up. It didn't have a very satisfactory bottom end stock, and when Steve got through with it, it did.

I don't know if this helps, but if you want to know more, feel free to email me off-line.

Tonywinsc - Very nicely said about tubes vs transisters. More rounded and natural.

It's awfully easy to forget that the real comparison should be with live music, not from one system or piece of gear to another.

Cheers