[quote=pompeiisneaks post_id=371634 time=1492195566 user_id=16952]I'm personally not yet convinced that transformers have some magic in them, and that so long as the transformer can handle the current given, and has the right voltages, it should be fine, but if someone has some compelling proof I could learn about, I'd love to see it
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I think it depends on the circuit and application. I don't have compelling proof (I'd have to swap PT's and get you to play them both) but I can tell you that I swapped out a Heyboer PT from Metroamp for a PT from Chris Merren in my 12000 Plexi build and I was blown away. I had always heard about OT's being critical to tone, but then I thought about it. It's not about handling the current, it's about the current able to be supplied, or to put it a better way, not being able to supply current, which is sag.
When you do the old all knobs on ten trick with a plexi, the PT sags when you play very aggressively with your right hand. The PT can't supply enough current and the voltage drops. A lower voltage means earlier clipping, meaning earlier distortion. Roll your guitar volume knob back (depending on the pickup of course) and play lighter, and you have that amazing dirty/crispy clean tone. As a matter of fact, pick dynamically and the amp will follow, if your amp is properly built/tuned.
My friend and I have the exact same build and had pretty much exact sounding amps and when I told him about it he was very skeptical. He came over and we A/B'ed them and he wasn't happy when he left. I told him it was just money.
In an ODS, it may not matter though, as the circuit and application are different from a Plexi from what I can see.