The 5 additional boost modules were announced today, though we really need to drop the "boost" from the description and just call them modules. Here's Keith's statement from the announcement e-mail:

I know we labelled the second channel on the Crown Jewel as a "boost", but boosts aren't the only thing you can stick in there. Introducing 5 new modules for the Crown Jewel boost channel:

  • The Fuzz Module - based on the fuzz circuit from the Thomas Organ Fuzz Wah which was just a modified silicon Fuzz Face, but with more aggression and sustain than your typical Fuzz Face. Internal trimmer bias. Use your guitar's volume to control the fuzz level.
  • The Mimosa Module - based on the Dan Armstrong Orange Squeezer. You've all probably built one of these as a standalone unit. Now you can have an OD/Compressor combo
  • The Soft Clipper Overdrive Module - just the overdrive section from the Tubescreamer. No tone control. No input or output buffers. Just the Silicon diode soft clipping section of the circuit. Internal trimmer allows you to set the maximum distortion. Use your guitar's volume to control the amount of drive. Use it as a boost or a second stackable overdrive.
  • The Octave Up Module - based on the Dan Armstrong Green Ringer. A dirty octave up that excels at pairing with overdrives, distortions and fuzzes. Dial in shockingly convincing Superfuzz sounds with this module!
  • The Hard Clipper Overdrive Module - just the overdrive section from the Klon Centaur. No tone control. No buffers or dry blend. Just the Germanium diode hard clipping section of the circuit. Internal trimmer allows you to set the maximum distortion. Use your guitar's volume to control the amount of drive. Use it as a boost or a second stackable overdrive.

The Crown Jewel just keeps getting better. Want a great gain pedal with an on-board compressor? Or a fuzz to stack with the overdrive stage? Or an octave-up by itself or in combination with some dirt? They're all possible now....

They're all just $10 and you can see 'em here: https://buildyourownclone.com/collections/crown-jewel