emaidel was right about the Hi-Fi Tuning fuses

[E-Stat]

If the results are so easily negated by the introduction of contacts in a "spurious black box" the difference must be very small.

The measured voltages of ppp passages is indeed small.

What about the contact areas on the AC plug (both ends), power switch, mechanical source switch, speaker protection relay, speaker selection switch? I'm surprised anyone gets good sound out of their systems at all.

You keep switching the topic from in-signal to AC, but I'll change tracks. They all matter. Ideally, one's amp would be soldered directly to the AC line. Hospital grade outlets and higher quality plugs do provide greater contact area and tension.

On the same note, what about changes in temperature. Are your listening sessions temperature-consistent? You do understand the relationship between electronic parts and temperature coefficients, right?

I am very sensitive to temperature and humidity differences because my stats require different bias settings for those differences. During a two hour listening session, however, there is little change to either. Fuses undergo thermal changes as well.

I think what you're hearing is "arm-chair hallucination".

When the first solid state amps started appearing in the 60s, they were dreadful sounding, but all the measurements (known at the time) looked good. Those with discerning hearing didn't ignore their senses until the engineers figured out the issues. When the first digital players started appearing in the 80s, they were dreadful sounding, but all the measurements (known at the time) looked good. Those with discerning hearing didn't ignore their senses until the engineers figured out the issues. Feel free to wait twenty years before you can enjoy these kinds of improvements.

rw