No, because the Flickinger 351-1 is not really a "clone" of anything. It is a one-off (or, dozen-off) equalizer that borrows the filter circuit idea from the Pultec EQP-1R, adds a few more frequencies, and inserts a discrete Flickinger solid-state op-amp as the make up gain amplifier in place of whatever Pultec used.
The important thing here is the filter circuit, which I described above.
If you consider the historical context of this, it makes sense: If you had a studio in the early seventies and already had a rack with a bipolar 24 V power supply (or, Flickinger console), adding this outboard EQ with an op-amp would be a lot more economical than a Pultec. In fact, you could easily add 8 or more channels without loading down a power supply too badly, and that would be a HELL of a lot cheaper than 8 units with tube gain make-up amps, or 8 Pultecs of any flavor.
If you'd like to see the EQP-1R circuit and compare the two,
here it is.
If I had to guess, I'd say the reason Dan opted for the EQP-1R circuit over the 1A is because the 1A used a proprietary, custom-wound and potted multi-tapped inductor, which would have been a lot harder to find than the standard 50 mH and 100 mH parts used in the EQP-1R.
But who cares about all this shit?? It's an EQ, built by a legendary audio designer, and it sounds GREAT and it's RARE.
Does yours work? How does it sound?