- 3 effects CMOS switching [Not yet verified] – Toggle between three different circuits/effects using a momentary stomp switch.
- -9v and bi-polar +9v/-9v charge pump [Verified] – Power those odd effects using a standard +9v battery or power supply.
- BYOC Amp Selector [Verified] – ABY box.
- Audio oscillator [Verified] – Nice for debugging.
- Baja Silent Selector [Verified] – ABY box.
- Foxrox Wah Retrofit Buffer [Verified] – Facilitates placing a wah in front of a fuzz.
- Foxrox Wah Retrofit Buffer w/ on-board volume [Verified] – Same as above, but with the volume pot as a trimmer.
- H&K Red Box MkII [Verified] – DI box used for silent recording of your normal amp.
- iPhone/iPad interface [Not yet verified] – Buffer for connecting your guitar to your device.
- JFET testing circuit [Verified] – Use this to match JFETs for the MXR Phase 90.
- Latching Relay switching circuit [Verified] – Replace your regular 3PDTs with a “soft-touch” momentary switch.
- Latching Relay circuit v2 [Verified] – Same as above, but using an ATTiny85 micro controller.
- Music Man Sabre II on-board bass preamp [Verified]
- Music Man Sabre II on-board guitar preamp [Verified]
- Music Man Stingray on-board bass preamp [Verified]
- Noisy Cricket [Verified] – 9V DC practice amp.
- Regulated +9v power supply [Verified]
- Sine Wave Generator [Not yet verified] – Useful for generating an input test signal.
- Splitter Blend [Not yet verified] – Dual buffered send/return with a mix at the end, as seen on ROG.
- Splitter Mixer [Verified] – Buffered send/return- and dry paths with mix at the end.