@holco Please note that neither Tom or myself have conducted our own resistor listening comparisons. The Mundorf was on the short list but the Mills rose to the top of the list based on engineering, subjective opinions, and price. If cost were not a factor, I would try Path Audio re$i$tor$. The Mills are a really good and cost effective upgrade over the OEM sandcast resistors. Is it possible the Mundorfs sound better still? Could be but I am very comfortable with the choice of Mills.
There are endless combinations of parts that could be applied in a crossover upgrade and even a full time designer could not have time to listen to them all. Tom has given very careful consideration to the possibilities based on his own extensive knowledge as well as opinions of others with broad experience. Tom only has time for a subset of sonic comparisons. I will compare the sound with and without Multicap bypasses on the coax feed caps. I might also compare foil and wire coils. But I trust that Tom has made good choices, just as I trusted those of Jim Thiel.
There are endless combinations of parts that could be applied in a crossover upgrade and even a full time designer could not have time to listen to them all. Tom has given very careful consideration to the possibilities based on his own extensive knowledge as well as opinions of others with broad experience. Tom only has time for a subset of sonic comparisons. I will compare the sound with and without Multicap bypasses on the coax feed caps. I might also compare foil and wire coils. But I trust that Tom has made good choices, just as I trusted those of Jim Thiel.