Change from PS Audio S300 Stereo Power Amp to PS Audio M700 Mono Amps

guess this is where : “more, isn’t necessarily better”

I'll assume more pressure means the lower frequencies. Perhaps you are hearing more bass with maybe less "control" over the woofers? I own a PS DAC and they have been very helpful when I had questions, give them a call, they might have some ideas why. They'll help you even if you brought them used. Hope this is a least a bit helpful. 

@deadhead1000 

Thanks for the reply. I was also thinking the M700's may be driving the bottom end of the Treo's to a lower level than the S300 and lower than I am used to. 

The M700's do sound great as did the S300 so I am hoping the issue will pass.

I will reach out to the folks at PS Audio tomorrow. Thanks for the suggestion. Definitely helpful.

I had the M700s for a while, and while I liked them, they didn't fill my large room. I did not find the bass pronounced

One thing I was aware of, and you kind of hinted at it, do not stack them. Try separating them as much as your interconnects allow, even if just to experiment before moving on

hth

@tweak1 

You are correct. I do have them stacked and separated by IsoAcoustics pods as noted on another thread. My set up unfortunately doesn't allow me to separate them but I can do that temporarily just to see if stacking them is the cause of the issue I'm having. Thanks.

Maybe minute speaker adjustment in addition to unstack.