Parasound Halo A23 paired with Peachtree Nova 125

I recently acquired a used Halo A23 from a local buyer. I also have a fairly new Peachtree Nova 125. As I mentioned in another thread, I recently bought B&W CM10s and found the Peachtree to be a bit too bright and lacking just a bit on the bass (the CM10s have an additional base driver). However, I really love the DAC in the Peachtree and am quite satisfied with the overall clarity and detail.

So the question is if its worth spending $$$ to buy a Parasound P5 preamp or use the Peachtree as the preamp/DAC in combination with the A23. I mostly listen via a digital source (iTunes via Airplay/Apple TV) and don't really need phono or other features of a typical preamp.

Problem is that no dealers in my area actually have the P5 in stock, so there's no way to do an audition. Of couture, I can buy it from Audio Advisor which has a decent return policy. But I don't want to go through the hassle of shipping it back if it doesn't work out.

Trying to figure out if the improvement in sound will be noticeably better if I get the P5.

Any advice will greatly appreciated.