Hello Jack,
without sounding like a bean counter, but active is distribution, passive is splitting.....
You might want to look into a good working V74(a), original designed as an buffer/distribution amp with three different outputs, all independent balanced.
Most vintage dealers try to pass those units as a mic pre, what is a bunch of crap, but used in their original field, like distribution it works incredible.
As an alternative in solid state, you might want to try a V672 set up as an buffer with four outputs all independent balanced. Both units have extreme high head room but of course the vintage factor with setting it up proper etc. sucks if you do not know a good tech.
For my taste (I use it all the time) the V74 is a bit cleaner (and tube) than the V672, but the solid state design of the V672 with its 30dB gain is a bit easier to use and handle (maintenance)...
Hope that helps you...
Best regards,