I was packing up the stuff from this thread and there's a few points I can add about the Waza pedals.
On the SD-1w the buffer output which goes to the overdrive section is tapped off the source of the JFET ie. before the final BJT buffer. Whereas the clean signal is tapped off the BJT buffer. (So it follows the pattern of some of the Ibanez pedals where the clean signal has an extra buffer before the JFET switching.)
The DM-2w on the other hand uses the output from the second buffer for both the clean signal and the input to the effects circuit.
The internal buffers on the DM-2w, for example the buffers used on the Sallen and Key filters, are just the plain vanilla one transistor buffers.
In both the SD-1w and the DM-2w the output buffer is a BJT buffer, like the older Boss pedals. One change to the output buffers on the Waza pedals is the resistor in series with the signal line is moved to the output side of the resistor to ground. This prevents creating an unnecessary voltage divider with the 100k to ground and minimizes signal loss.
The general set-up on the JFET switching uses 1uF electrolytic caps for all the signal coupling caps and 100k resistors to Vbias. The standard Boss pedals used 47n caps and 1M, so the Waza circuits have dropped the low-frequency cut-off a bit.
