So with no switches, check to see IF each component inverts , then it’s just math...if you need to get back to absolute by inverting speaker cables. Obviously that fix can be a puta if you have sources that do or don’t invert.
my MX-110Z has an inverted switch and a bunch of other handy features... purist preamps ... oh well, not so much
my MX-110Z has an inverted switch and a bunch of other handy features... purist preamps ... oh well, not so much