Will preamp manufacturers tell you if the model is phase inverse?

So much for plug and play. Lots to consider when purchasing a preamp

I think the idea of having a phase inverter makes the most sense, given the possibility of a recording being inverted or not, however...

I should also point out that the simplest designs invert phase, since they use a single tube stage per channel. That's the simplest possible design. To get phase accurate, you have to add at least one more stage.

Best,

E

So I’ve owned gear that inverted phase and the owner’s manual instructed that wiring to the speakers should be flipped. What i never understood is if the circuit inverts polarity why doesn’t a manufacturer simply reverse the leads heading to the component’s output so that once leaving the component polarity isn’t reversed any longer. 

Thats a good question

What i never understood is if the circuit inverts polarity why doesn’t a manufacturer simply reverse the leads heading to the component’s output so that once leaving the component polarity isn’t reversed any longer.

some preamp may be easy to do like this, most may require an extra stage.