as Ryan pointed out the V72 was original the official counterpart.... Historical speaking the EQ was buffered by the V72 that was making up the 34 dB loss, but it will sound different if you patch it in front of it.
Today with the high prices of the V72 a V72a would shine in that set up because it was designed as a buffer, or a modified V74(a)...
If you do not want to drop that much money for tube gear, the V672 will sound great if you hook it up before it.
I have the entire documentation for the PF version but I have to dig it up first.