@One Two I still have the Big Trees with DI. It's good in setting the bass in the mix but there is a bit of a low end rolloff which is evident when you switch from Dirt to Clean channels. I mentioned to Steve that the FPT seemed to have more low end extension and he confirmed this. On the flip side, I can't get the FPT + TSTDI to sit in the mix as easily as with TBT so maybe I use too much bass when I play
. Whatever the case may be, the FPT is more fun for me to play through on bass but it seems TBT gives me a quick studio tone that is well-suited for genres that don't require a lot of low end, such as reggae. I think the EL84 is the limiting factor on the low end but I could be mistaken. Anyway, that's my quick take that you didn't ask for. 
I've run the FPT at the end and it works well there except when I used it at the end of a synth chain. I haven't experimented as much with it like that so there may be some settings where it does just fine. I just felt it interacted/sounded a lot differently than what I expected. I had a similar thing occur with the OE Bassrig '64. The Broughton Studio One seemed to fare better in the end position of the synth chain. With fuzz FPT is nice. If you try it at the end let us know what you think or any tips you come up with.
[EDIT]: in an Octave/Fuzz/Env. Filter (OFF) synth chain I found the FPT works best after the octave. The EQ works great there to beef up the signal if desired whether before or after the fuzz and it seems to retain the original flavor of the synth chain. When I put the FPT after the Envelope Filter the sound was altered more and the dynamics seemed to suffer a little. It seemed to be more nasally and less full sounding.
I've run the FPT at the end and it works well there except when I used it at the end of a synth chain. I haven't experimented as much with it like that so there may be some settings where it does just fine. I just felt it interacted/sounded a lot differently than what I expected. I had a similar thing occur with the OE Bassrig '64. The Broughton Studio One seemed to fare better in the end position of the synth chain. With fuzz FPT is nice. If you try it at the end let us know what you think or any tips you come up with.
[EDIT]: in an Octave/Fuzz/Env. Filter (OFF) synth chain I found the FPT works best after the octave. The EQ works great there to beef up the signal if desired whether before or after the fuzz and it seems to retain the original flavor of the synth chain. When I put the FPT after the Envelope Filter the sound was altered more and the dynamics seemed to suffer a little. It seemed to be more nasally and less full sounding.
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