g_nakamoto,
I owned a pair of 901V's. I liked them, a lot. They needed power which I had. Phase Linear 400 was good, the McIntosh MC2300 was better. They were the only pair of speakers that I had ever owned that could take everything the Mac good give. (rated at 300wpc, output was a steady 475 when tested into 8ohms).
I used the Phase Linear parabolic equalizer in conjunction with the 901's as was happy with them. When I began experimenting with systems and got into my Class A phase of life (Levinson ML2's, Krell KSA 50), I needed to change speakers as these wonderful Class A amps sounded terrible through the 901's.
When I did change speakers, I missed the sound of the 901's and the tremendous bass output. (solid, not thumpy)
If you like your 901's, then maybe use the tone control on your preamp to add some sparkle or like me add an equalizer and add a little in the treble area.
I am curious though, if you think that your Mac amp sounds better than your Phase Linear 400 with the Bose? My Mac had more power, but
it certainly didn't sound better with the Bose, just the opposite. The Phase sounded better to me at lower volume listening using the Bose than the Mac did.
Enjoy, they are classics and can be a blast depending on what you listen too.
Norman