Relationship of amplifier sound to transformer quality?

The heavier the better!

True for bass Don, but that compromises the highs. As in most things Hi-Fi, it's a balancing act. That's the art of transformer design.

if the transformer is hand wounded using high quality silver wires with iron-nickel alloy in Double-C configuration, will this give deep bass without compromising the highs and still sound quick & agile? 

"if the transformer is hand wounded using high quality silver wires with iron-nickel alloy in Double-C configuration, will this give deep bass without compromising the highs and still sound quick & agile?"

I imagine that combination of metals would work rather well since, you know, iron-nickel alloy is mu metal. I suspect it would sound like a million dollars.

I had several encounters with the late great James Bongiorno (Hadley, S. A. E., Great American Sound, SUMO and Spectra AmpZilla fame) who would agree that transformer design and quality has a significant effect on the sound of an amp.  His very own amp designs testify to that. Look at the old Ampzilla, Son of and Grandson amps, all having huge high quality transformers. 

He told me that the transformers were one reason that old Sansui receivers and amps sounded so good. At the time I didn't agree with him as I wasn't a huge Sansui, GAS, or SAE fan. My how things change.

I came to realize and appreciate what genius he was, and that more often then not everything he said was true.  All of his designs are musical and engaging as was the man.

N