Yo Dracon:
If your studio has an integrated amp, you can run passive monitors through it. Although from what I read, I guess the actives are better in some instances.
I've been using a Yamaha AX 592 stereo amp to run my entire gaggle of gear in my studio. This amp is pretty good as it runs two sets of speakers,[monitors included] patches my two tape decks and CD player--I can record to any of the tape decks from the CD player, and it patches in my turntable,[yeah, I still use it once in a while] and has a "clear through" button that will eliminate any coloring from the amp when I'm burning and playing CDs. Pretty nice little amp.
I guess someday I'll go to active monitors. Right now, I'm using the KRK ST8 passives--same price range as York passives only the KRKs have an 8" woofer and the Yorks only a 6.5" woofer. Big difference in sound.
Think Spring
Green Hornet