emaidel was right about the Hi-Fi Tuning fuses

[E-Stat]

If they do sound different, then there's a quantifiable and measureable parameer that describes thatbehaviour.

Its called distortion spectra. While THD is an utterly useless and misleading metric, a deeper analysis into the makeup of the distortion provides the clue. 1% second harmonic distortion is virtually inaudible while 0.1% fifth or seventh is quite noticeable. Amplifier designs vary greatly in how they distort.

Nelson Pass speaks on the topic here.

rw