Finally got my Supreaux Deux cranking today after a bit of futzing around. As discussed in the J201 thread, I couldn't get the input and output stages biased, the middle gain stage using a NOS Fairchild J201 biased right up, while the 2N5457's in Q1 and Q3 weren't even close. I can't remember where I got these particular JFETs, I thought they were either from a NOS stash I had sitting for years, or from a known good vendor, but I can't be sure. In any case, I haven't had any problems with this bunch of JFETs which were stored in a pink poly canister I've had forever. Also, I was able to pop a couple of new PF5102's into the sockets, they biased fine but had too much gain, the circuit went into oscillation with the gain pot halfway up. At this point I figured I messed something up, because I also noticed the gain and volume sweep was backwards (more on that in a moment). Since this wasn't a Vero build but a PCB from a vendor I figured for sure I goofed because it just didn't sound good at all. Figures, since it's one of my better decal jobs! I did a little googling and found some JFET testing schematics, so I figured I'd test these 5457s when I had a chance. After going out with Mrs Z today I went to the bench to mess around and also figure out why the darn pot sweep was backwards. First thing, as recommended by @awasson, I'd try some MPF102s. They biased right up no problem but again had too much gain. I am biasing these per ROG (and TH Custom) instructions of 12 volts, as opposed to half the supply rail of 18 volts, provided by a TC1044SCPA charge pump. At half supply voltage the circuit went into oscillation pretty quickly. I was starting to wonder if I got the wrong charge pump IC too. Unfortunately, the good ole mail carrier didn't bring my Small Bear order today as I got a bunch of fresh 2N5457s (but did bring my Mouser order with parts for the Aquaboy analog delay!) After some thought, I realized I modified the original layout to fit the 125B box better, which as you guessed, flipped the pots upside down. I unboxed it, and rewired the right angle pots with some solid core wire. Then I checked the Idss of my remaining stash of old 5457s and they weren't anywhere near spec, 0.4mA for two, 0.2mA for the other two (!) Spec says 1mA minimum, ugh, bad JFETs. Since I didn't have anything reasonably close without changing the resistors around Q1 and Q3 to use the MPF102's (or PF5102s), I dug around in my stash and found a packet of "J201" JFETs that I got from eBay awhile back. Marked "Fairchild", they were pretty obvious counterfeits, but I decided to see if I could get them to bias for the heck of it. Well, I'll be, biased right up! Spec is off for a J201, at 1.5mA Idss, but close to a 5457. They sound great! I'll replace them when the parts come Monday, but at least I now have an idea of what the Supreaux Deux is supposed to sound like. Pics or it didn't happen (note wires on pots to fix my goof, and I didn't bother to clip the leads of the "J201" fakes): and the obligatory Tele (Thinline) shot when I finally got it sounding good: So, TLDR: The Runoffgroove Supreaux Deux is an awesome overdrive, check your potentiometer orientation and JFET biasing before boxing, and Telecasters rule!