How much difference do output transformers do?

[marnold***]

Little off the topics here but you raised a good point. But why did you calculated the low frequency inductance base on -3dB? I mean would the design for down -1dB sound better or its no necessary for guitar amps?

Reason for asking is I'm buying a plexi 100w OT , its inductance is base on -3dB (1930 ohm impedence , 82 lower frequency with 3.75 H inductance)

Thank you in advance

I can't answer your question, but the post was made seven years ago and Jim P hasn't been on here since the end of 2011 so . . . Maybe DVM or someone else might have an answer for you.