Technical question on phase inversion.


This past weekend, I replaced my solid state preamplifier with a tube preamp. What a difference! I really like the change in the sound but I'm confused by one thing. The MFA Magus B manual says this about the main outputs,  "NOTICE: The high-level stage of the Magus preamplifier is an inverting amplifier. Many audiophiles prefer to correct for this by reversing the speaker cables on BOTH speakers (+ to - and - to +)." So, now I'm confused! I have tried it both ways and they both sound good to me. I'm wondering if there is a rule of thumb about "inversion" that I'm not aware of. So far, I'm only listening to CD, if that helps. Don't get me started on how to correct for inversion when playing analog. That's my next adventure!
Ag insider logo xs@2xtonykay
 Your pre amp inverts phase. Many tubed pre's do. Many recordings are not actually " in phase" , tho' I think that the majority are. I would just swap your speaker connections as per your manufacturers instructions be content knowing that  youll be " phase correct " the majority of the time.
Roughly speaking, 50% of all recordings are 'phase inverted'. If the recording is multi-miked and multi-tracked, its going to be really hard if not impossible to hear the difference.