Jed's Pedals' Gekyume is a six-knob delay pedal built on the PT2399 chip, sold by Jed's Pedals as a DIY kit. Jed's Pedals describes it as an analog-voiced digital delay with an LFO hitting the repeated signal, aimed at players who want murky oil can delay tones or warbly old-school tape echo rather than crisp, clean repeats1. If you are new to delay pedals, the PT2399 is a common chip in DIY delay designs, and the Gekyume leans into its lo-fi character instead of hiding it.
Sound and controls
The modulation section is the heart of the design. Jed's Pedals calls it super-versatile and says it lets you sculpt your wave via three controls1:
| Control | What it does |
|---|---|
| Depth | Shapes the modulation section's wave |
| Shape | Shapes the modulation section's wave |
| Rate | Shapes the modulation section's wave |
All three belong to the modulation section, so the LFO that hits the repeated signal can be tuned from subtle movement to pronounced warble1. Combined with the 30 to 600 ms delay range, that puts the Gekyume in the territory of short slapback through medium, degraded echoes1.
Kit versions and what you get
The Gekyume is sold in six versions, so you can buy as much or as little of the build as you want1:
- PCB Only: just the plain PCB
- PCB & Components: PCB, onboard components and any pots and toggle switches
- PCB & Components and off board parts: as above, plus the off board components: foot switch, jacks, 9V socket and LED
- Full Kit: as above with an undrilled enclosure
- Full Kit & Drilling: the Full Kit with all the holes drilled for a complete pedal, for a small surcharge
- Pre Built Kit: built for you
The board is spaced for PCB mounted toggles and pots, which keeps wiring to a minimum during the build1.
Pre Built Kits have a 1 to 4 week build time. There are no returns accepted on them, but Jed's Pedals gives a 12 month repair warranty, so if a fault develops the maker will repair it1.
Comparison
Jed's Pedals says this kit compares to the EarthQuaker Devices Space Spiral, another modulated delay. The maker is explicit that the comparison carries no endorsement or approval from any manufacturer1.
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Questions
Is the Jed's Pedals Gekyume a kit or a finished pedal?
It is sold primarily as a DIY guitar effects pedal kit, in several versions: PCB Only, PCB & Components, PCB & Components and off board parts, Full Kit, Full Kit & Drilling, and Pre Built Kit. The Full Kit includes an undrilled enclosure, and drilling is an optional extra with a small surcharge. A pre-built option is available with a 1 to 4 week build time.
What chip does the Gekyume use?
The Gekyume is built on the PT2399, a chip widely used in DIY delay designs. Jed's Pedals describes it as an analog-voiced digital delay pedal with an LFO hitting the repeated signal, which is where the warm modulated echo character comes from.
What is the delay time range of the Gekyume?
Jed's Pedals lists 30 to 600 ms of delay time. That range suits short slapback and medium echo settings rather than long ambient repeats, and pairs with the modulation section for old-school tape-style tones.
What enclosure does the Gekyume fit?
The Gekyume fits in Jed's Pedals' own JP125B enclosure. The Full Kit includes an undrilled enclosure, and the Full Kit & Drilling version adds all the holes needed for a complete pedal for a small surcharge.
How much current does the Gekyume draw?
Jed's Pedals lists the current draw as around 70 mA. That is worth keeping in mind when planning a daisy-chain power supply alongside other pedals.
What pedal is the Gekyume compared to?
Jed's Pedals says the kit compares to the EarthQuaker Devices Space Spiral. The maker notes this is a comparison only, with no endorsement or approval from any manufacturer.
Sources (1)
- Gekyume | DIY Guitar Effects Pedal Kits, Jed's Pedals (jedspeds.co.uk)