Polarity between amps

First time question and is probably a basic 101 for many. My EE tube pre amp inverts polarity, my new Consonance M400 mono blocks do not to my knowledge. Should my red speaker lead be plugged into the black negative out of the amp and also run into the black lead of the speaker and not to complicate but they are bi-wired speakers, do I also reverse the other leads at the speaker end also. Appreciate any feedback. Thanks.
Just switch the pos and neg leads at either the amp end or the speaker ends. Not both! This will change the phase. Then see which sounds better to you and report back. It really depends on your cables which is easier to switch. My biwire cables have single leads at the amp end that then are externally biwried to the speakers. So in my case it would be easier to make the change at the amp end and not the speaker but you could do either. Let us know how it turns out.
Hello Danham, 50% of all recordings are out of phase so this is not likely to make much difference. Its easier to hear absolute phase when the recording used only 2 microphones. Relatively speaking, that's not a lot of recordings.
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