The Jeds Peds Professor Yaffle is a DIY guitar effects pedal kit that the maker calls "the ultimate fuzz platform". It is designed to let you recreate a huge range of boutique Fuzz Face-style circuits, from the Eric Johnson Fuzz Face to the Roger Mayer Axis Fuzz and even the Analogman Sun Face1. Jeds Peds notes that there is no endorsement or approval from any manufacturer and that this information is for comparison only1.
What it does
The Professor Yaffle is a fuzz kit built as a platform: one board that covers many Fuzz Face-style designs rather than a single fixed circuit. Because the board accepts a variety of transistor types, the parts you choose shape which of those circuits you land on. Jeds Peds names the Eric Johnson Fuzz Face, the Roger Mayer Axis Fuzz and the Analogman Sun Face as the range it can recreate1.
Since the board accepts a variety of transistor types, Jeds Peds says you will need to check the pinout of your transistors before soldering1.
For more fuzz kits from the same maker, see the Jeds Peds Axis Fuzz kit, the Muff Fuzz kit or the Silicon Tone Bender, or browse all Fuzz Pedals.
Versions and what you get
The kit is sold in five versions, from a bare board to a complete pedal1:
| Version | What it includes |
|---|---|
| PCB Only | Just the plain PCB |
| PCB & Components | PCB with components |
| PCB & Components and off board parts | PCB, components and off board parts |
| Full Kit | Everything for a complete pedal |
| Full Kit & Drilling | Full Kit with all holes drilled, for a small surcharge |
Drilling is an optional extra for the Full Kit, and it includes all the holes for a complete pedal1. The board fits a JP125B enclosure1. You will need 2 or 3 knobs for this kit, and Jeds Peds suggests medium sized ones1.
Pre-built option, warranty and returns
If you would rather not solder it yourself, Jeds Peds offers a pre-built option. Select the Pre Built Kit and add your knobs from the knob section, or the pedal will arrive without them1.
- Build time: 1 to 4 weeks1
- Warranty: 12 month repair warranty, so should a fault develop the maker will repair it1
- Returns: no returns accepted on pre built kits1
Pre-built Professor Yaffle pedals cannot be returned, so the 12 month repair warranty is the cover if a fault develops1.
Questions
Is the Jeds Peds Professor Yaffle a finished pedal or a kit?
It is a DIY guitar effects pedal kit, sold in five versions from a plain PCB up to a Full Kit with drilling. Jeds Peds also offers a pre-built option: select the Pre Built Kit and add your knobs from the knob section, since the pedal will not arrive with them fitted. Pre-built units carry a 12 month repair warranty and have a 1 to 4 week build time, with no returns accepted.
Which Fuzz Face circuits can the Professor Yaffle recreate?
Jeds Peds describes the Professor Yaffle as a fuzz platform designed to let you recreate a huge range of boutique Fuzz Face-style circuits, naming the Eric Johnson Fuzz Face, the Roger Mayer Axis Fuzz and the Analogman Sun Face as examples. The maker notes there is no endorsement or approval from any manufacturer and that this information is for comparison only.
How difficult is the Professor Yaffle to build?
Jeds Peds rates the kit about 5/10 on its own difficulty scale, so it sits in the middle of the range for the maker's kits. One thing to watch: the board accepts a variety of transistor types, so you need to check the pinout of your transistors before soldering.
What enclosure does the Professor Yaffle fit?
The board fits a JP125B enclosure. If you buy the Full Kit, drilling is an optional extra with a small surcharge, and it includes all the holes needed for a complete pedal.
Does the Professor Yaffle kit include drilling?
Only if you choose the Full Kit & Drilling version. Drilling is an optional extra for the Full Kit, carries a small surcharge, and includes all the holes for a complete pedal. The other versions come without an enclosure or without drilled holes.
How many knobs does the Professor Yaffle need?
You will need 2 or 3 knobs for this kit. Jeds Peds suggests medium sized knobs, and they are added separately from the knob section rather than included with the kit.
Sources (1)
- Professor Yaffle, Jeds Peds
