DIY Guitar Pedal Layout: Tonebender Mk2 with Bias Control

If you’ve ordered up our JDM Pedals “NPN Germanium Transistor Kit” (or have your own selection), then you’re ready to build some KILLER pedals. For the Tonebender Mk2, try lower gain (60-80 Hfe) in Q1 and Q2, and an AC130 in Q3 (they have a bit more leakage, which is good in this position) with the higher gain range (Hfe 90-120).

Here’s the layout as a PDF: tonemaster_mk2_layout

Drop comments below if you have questions! cheers, joe

3 Comments

  1. Jonathan Fann January 16, 2018 at 4:33 pm - Reply

    Image seems to crop out the pots and stuff. also are the black dots cuts?

    • Joe Dochtermann January 17, 2018 at 8:02 am - Reply

      Sorry about that – image was some somehow cropped! I’ve added a link to download a PDF with the full image and some tips as well. The black dot are cuts. cheers, joe

    • Joe Dochtermann January 17, 2018 at 8:02 am - Reply

      Sorry about that – image was some somehow cropped! I’ve added a link to download a PDF with the full image and some tips as well. The black dot are cuts, yes. cheers, joe

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