Modwright and MP-1 were the most similar of the three. Both are transparent. However, the Modwright sounded too much like solid state for me. Rather one dimensional, IMO. I believe Modwright preamps have come a long way since then.
The Supratek just didn't match well with my amplifier, so I can't really give it a fair appraisal.
The Supratek just didn't match well with my amplifier, so I can't really give it a fair appraisal.

