| The zeners on the SC-1 PCB are not used for PSU regulation, FYI.
Just because you see a zener on the PCB, doesn't mean that's what it's used for.
I'm not using an AC-DC switching PSU, so no need for 317/337 on the preamp board.
I'm using a LINEAR power supply. So my 317/337 regulators are on my PSU board kit. Take your pick on which is a quieter PSU... switching or linear.
You can substitute a 1512 chip (both 1510/1512 are compatible) but you'll have 6db less gain. I tried a 1512 and 1510 and to my ears, they both sound the same and have same noise. But the 1510 is 6db more gain. Either way, you can swap it with a 1512 or 1510... or even an INA217 (but don't do the latter... the THAT chips are better :) |