When I had MC pickups I initially used a Signet transformer that was almost the size of a beer can, which I gather is larger than most. I was very skeptical about the merits of a transformer, and it was only after I abandoned it and went on to active MC preamps that I realized how good the transformer was.
This is probably an area where generalities are inapropriate. Results will be highly dependent on which transformer and which pickup is involved, and which preamp you compare it with.
This is probably an area where generalities are inapropriate. Results will be highly dependent on which transformer and which pickup is involved, and which preamp you compare it with.