HiFi Tuning fuses direction

What do I mean?
Well, AC power before the transformer, even, is symmetric and at a very highly controlled 60hz.
I simply can't imagine a fuse having an audible effect based on orientation in this application.

Now, my panels have fuses and they are goners. The crossover jumpers have been replaced by copper....instead of the chrome plated steel (!) which also helped.

I guess I just have trouble with fuse polarity on the power line side of the AC transformer.

Try it in both directions and let your ears be the judge.
If you can hear a difference, then leave them in the direction that sounds the best.
If you can't, then it wont matter.

Maybe think of potential instead of direction. Potential is higher at the source than nearer the load weather AC or DC unless there is absolutely no resistance in the circuit.