Just built my first T15 today. It took me about 8 hours the first time. I had gotten most of the recommended tools and it was pretty easy. A few notes:
The Panavise circuit card holder (315) overlaps the circuit board enough where it will put some pressure on some of the electrolytics. If you have this head, it works great, just be a little careful.
The best advice I could give someone building these is:
1. Take your time. You get in a rush.. you end up with bad results.
2. Measure several times, but only solder once. I ended up double and triple checking myself while I was putting everything together. but it came out correct the first time.
3. Its a lot easier to read the markings on the PCB under a Capacitor before you install it. Double check yourself on polarized parts . You wont be sorry.
4. I advice you to organize your parts ahead of time. I ended up taking a couple of sheets of paper, wrote what the parts were and their values, then laid the parts out on that sheet of paper, measuring the parts with my DMM as I placed them on the paper and as I took them off the paper. Again.. see 2.
I hooked up a mic to it and tested it out in the studio. Not even a slight crackle. Sound quality was really good and clear. Very transparent with a lot of bandwidth. Virtually no color, which will make this a great preamp to use with VST plugins that emulate various preamps. (Wave's SSL or API plugins come to mind) I cant wait to try these out on some other instuments.
Great product Tim. Ill most certainly be coming back to fill out my CH01 with some A12s and N72s.
Peace
Rev. J Cox