Absolute Phasing

Does it matter?

It matters if you have sub woofers attached to the same Pre Amp.
The main speakers could be potentially out of phase with the Subs.

try it both ways... go with the one with better bass response

It's a pretty conventional solid state amp, so I would be surprised if it inverted phase. That's an oldie but goodie.

"...Does it matter?..."

i most cases no but the Infinity Sub controller for example will pop if connected out of absolute phase. I know, I have two dead boxes right now. 

It matters if you have sub woofers attached to the same Pre Amp.
The main speakers could be potentially out of phase with the Subs.

Nope. Next spurious pseudo-reason?

try it both ways... go with the one with better bass response

This involves listening. People start doing that, next thing you know they're talking about what they're actually hearing. This is an audiophile site. Let's keep it theoretical, okay?

My man millercarbon! You have a way with words. Sarcastic, blunt but to the point. 👍 Thank you all for your responses. 

It doesn’t matter because the sub’s driver is not on the same plane as the main speakers, therefore, the phase alignment is already off due to physical placement. This is one of the reasons that a lot of higher quality subs have the ability to adjust phase.  

Unfortunately I don’t have a manual for this puppy but I do have a spec sheet if you need that.

I have been looking for one but haven’t had much luck.

If I may ask, where and how much did you steal this gem of a amp?

I bought it on Ebay for $643.00. I was currently looking for a Bryston but when I spotted this one I jumped on it!

Lucky you. Wondering if you got XLR connections and , Toshiba or Hitachi Mosfets....

...Anyways, I thought this was a wonderfully warm sounding AB amp with enough power to drive anything in front.

I have its companion pro10 MC collecting dust these says.

Congrats and Enjoy :-)

Hello,  @recluse, Have you had any luck on finding the manual for this B&K EX-442 Sonata Series amplifier? I attempted searching with no success. 

Any other Audiogon members your input is most welcome. 👍