If you're a fan of either the original gray box DOD 250 overdrive or the MXR Distortion+, then you probably already know that the two circuits are nearly 100% identical with the exception of a few component values. The BYOC 250+ kit comes with all the parts to build to either 250 or Dist+ specs and extra diodes to experiment with the clipping section. This is also one of the easiest kit to build that BYOC offers, so if you are looking for an easy "first timer" project, this kit would be ideal! Take tone into your own hands. Build your own DIY guitar effects pedal kit.