Crunchie Boost Update

My new pedal is coming along quite well. I decided to assemble it on stripboard rather than try to make a PCB due to my inherent laziness but I doubt it will make a huge difference to the sound as we're working with pretty low voltages. So far I have put together the preamp section (blue on the schematic) and tested the rest of the circuit above in the lab. It is essentially the Shaka tube by Aron Nelson but using 9V and with a gain control in the tube section that I am calling the "crunch". Looking at the output on the oscilloscope there was some nice, if subtle, clipping of a sine wave input. Of course it's difficult to know what this will actually sound like but we shall see - if it is not overdrivey enough I'll have to think about altering the point at which the second half of the tube stage is biased and maybe use this as the "crunch control". Also, obviously there will be an output stage with simple tone and volume controls and the supply circuit. The latter is rather interesting as I am hoping to get +9V and -9V from the standard Boss DC power supply using a MAX1044 switched-capacitor voltage converter. I think the current is within the operating limits of the converter as long as I don't try to use it to power the tube heating elements! In the lab the tube section and the preamp section were drawing about 0.2mA each but I'd better check that more carefully. It could all go horribly wrong from this point...

(PS I'll put some more pictures/schematics/oscilloscope traces up in following weeks.)