Cardel, no I did not do an ab comparison…P12 vs P15.
However as I stated earlier…"And yes…the P15 brings to the table a more relaxed sound better all around imaging and 3D spatial rendering and holographic sound. "
Even though you may think your power is clean…you may be unaware
of the thd on the line that damages the sine wave of the incoming ac.
The thd however small it may be, 2-3% is enough to degrade the
sq of your system’s capability.
The P12 is able to reduce the incoming ac thd down from the 2-3%
even 5-6% in many cases down to an outgoing .1% thd from the
P12. Sonically that is huge…made me a strong believer in the
power regenerators PS Audio offers.
My old PS Audio Quintessence could start cleaning crud from the
ac line starting at around 2000 hz, that’s according to the manual.
It employed a huge but light weight nano crystaline winding
of super permeability…and it did what I thought was a wonderful job
improving my sq…It is still in use 15 years later with my tv.
Then along came my P5 my 1st power regenerator. The difference
was more than stunning above and beyond my Quintessence.
All power line conditioners are unable to correct the incoming thd
coming on the ac line, but the P12 surely can and will…
It used to be that PS Audio offered a 30 day free home trial.
If for some reason it didn’t do as expected you then request
an rma# ship it back and get a refund…However I don’t know
if PS Audio still offers the free home trial… There is no harm
in calling and asking…
Hoping you the best in your audio journey.