This is my first finished Aion board and it’s a doozy. I haven’t seen such attention to detail and good organization on a board that’s as packed with mods as it is. It’s arranged for easy soldering and as I love to tinker, I put sockets on just about everything except the caps and the resistors.
I’ll be the first to say that my part orientation is a bit sloppy (bent over resistors and caps) but I really like the board quality. I don’t feel as though I’m going to rip up the pads or traces as I solder.
I also really like the refinement and control you have with the TS, you can dial in just what you want very easily.
I did not perform any extraneous testing with the transistors or the op amp, I just slapped in what I had from my parts bin and I think it sounds great as is. If I feel like it later, I’ll test out the sounds between different versions of the Op Amp.
-The JFET clipping is per the instructions, two 2N5457’s. I am unsure if I can tell a big difference in them through my amp, so I’m checking to see if I accidentally have too much solder on one of the switch pads. I can definitely tell that the center “off” switch has a much higher gain than either of the “on” positions, so it might be more subtle than I realize. I might swap out the JFETs for LEDs in the future.
Modifications or part substitutions
-C3, didn’t have any 51 pF MLCCs lying about, so I made a 50.5 pF from two 101 pFs I had lying about. Not really a mod, but in case you were curious what that ended up being.