You didn't say how old your PV11 is, but I'm guessing you've had it for awhile. I tried the same thing with my admittedly lower priced PV10 - I used it as a phono preamp into my various line stages by utilizing the tape outs.
I have to say, I borrowed a friends Channel Islands phono preamp recently and plugged in my VPI/Blackbird ...oh man, I just about peed my pants - now THIS is vinyl as I've heard and read about! And the CI only goes for 300 clams plus the 150 buck power supply, which is optional. I bought one the next day and am in vinyl heaven for really teh first time in my system. Wat lower noise floor, way more detail - I'm wearing out my records listening.
I've heard that the Bellari 200 buck tube pre easily outmatches the older CJ preaamps too, but can't confirm.
So I would have to say, if you can, borrow a newer phono stage and compare - I bet you find as I did that the old CJ ophono stages aren't up to what's out there today for not a lot of dough.