[First Edition] Modified Effector Contest

First Modified Effector Contest
Here are the 30 unique entries that passed the first round of judging!

Online voting for the second round of judging has begun!
The submission period has ended.
Thank you to everyone for your many entries.

The final results will be announced at
in the December 13 issue of Guitar Magazine, on our store’s website, and on BARKS.
Stay tuned!


You can view videos with details on each entry.
Part 1




Part 2




Part 3






<1> Mr. Kanano’s Project: “ZOOM G2.1Nu + Custom External Foot Switch Mod”

Can be operated with a custom-built external foot switch. As he began using it more often at home, he adopted game controller buttons for the switch so it wouldn’t hurt his bare feet. By adding a switch with simultaneous press functionality, he can easily switch to using it as a looper and other applications.


<2> Mr. Naoki Tanimura’s Project “small stone”

A bold modification of a 1980s vintage unit. Controls for depth, tone, drive, and feedback have been added. A mini-switch allows you to toggle between three waveforms: sawtooth, triangle, and sine.
*This piece was modified by Soul Power Instruments based on Mr. Tanimura’s idea. Please note that Soul Power Instruments is in no way affiliated with this submission.


<3> Tomoki Okuyama’s entry: “D&SII Mod.”

A switch has been added to the legendary ’70s D&SII, allowing you to toggle between three settings for the clipping diode: silicon, germanium, and no clipping. An LED has also been added, enabling true bypass on/off functionality.


<4> Hiroshi Andrew OHGAKI’s entry: “Orange Squeezer Mod.”

Ported to a BOSS chassis to allow foot control of Dan Armstrong’s well-known Orange Squeezer. It features mechanical switches for selection and includes a convenient volume control.


<5> lenheyvan’s creation: “Cry Bear”

A guitar pickup is fitted with a motor to reproduce the sound of the so-called “drill technique.” The tone of the motor noise can also be adjusted by changing the motor’s angle.The inclusion of a momentary switch that activates only when pressed is also practical.


<6> WHITE EYE PEDALS’ “LICK MUFF N”

A model that recreates the BIG MUFF from the RAM’S HEAD era. Going beyond a simple replica, it achieves a fatter tone by adjusting the tone circuit. The “N” for “NIPPON” is inscribed on it, reflecting the fact that it was assembled using mostly Japanese-made parts.


<7> A creation by “Kanyogo-bako”: “Bright Muff”

A LITTLE BIG MUFF converted to a 3-channel unit via digital control. It features memory switching for three different settings. The current setting is visually indicated by a vivid LED, and the brightness is adjustable.


<8> A creation by “Harinezumi Kobo Hariyama”: “Desparado”

A model inspired by Landgraf’s Dynamic Overdrive and developed through extensive research.

It’s a unit that spares no expense, from the circuit adjustments to the components and circuit board.


<9> Salty Guitars’ “Ladybug Distortion”

A model with a unique appearance that’s instantly recognizable. Although it was originally an inexpensive Effector, the protrusions on its back aren’t just painted on—they’re sculpted in three dimensions. Glow-in-the-dark BB pellets are used for the eyes, causing them to glow faintly in the dark.

<10> Mr. Fujimoto’s creation: “OD-2MOD”



The level, tone, and gain for both Normal and Turbo modes can be set independently. A switch added to the top of the pedal allows you to switch between modes, making it even more practical. The enclosure has also been repainted.


Video Part 1
<11> Mr. Sato’s creation: “BOSS MT-2 Mod.”



In addition to being able to toggle the clipping diode using a switch on the unit itself, you can connect it to a board that allows for one-touch swapping of various clippers to test them. When an op-amp test board is connected, you can also switch between op-amps.
<12> K. Kobayashi’s project: “Jim Dunlop Cry Baby Mod”



An on/off booster has been added after the wah pedal.By allowing adjustment of not only the boost function but also the output impedance, you can control the effect on the equipment connected downstream. It also features a pop-noise-free bypass circuit.
<13> Mr. Konishi’s creation: “Metal Zone CDS”



The mid-frequency range of the Metal Zone is controlled by a light sensor, so the frequency changes depending on the brightness. Since the mids are fixed at full boost, it can produce a rumbling roar depending on the light intensity.
<14> Gen McGuinness’s creation: “Tube sCream Biscuits”



A TS-style overdrive housed in a can that looks like it contains delicious cookies. The name “Tube sCream Biscuits” really stands out. It’s turned on and off with a toggle switch instead of a footswitch.
<15> Sushitation’s creation: “BOSS OS-4”



It’s written as “OS-4” but pronounced “osushi.”Its name is Sushi-tion. While the internals are those of a standard OS-2, even a slight change in design can transform it into a model you’ll grow attached to.
<16> Loz’s creation: “Fuzz Face Mini Mod.”



A modification that pays close attention to parts and wiring. It features niche modifications, such as using different types of wiring in parallel. A psychedelic paint job has been added to the exterior.
<17> A creation by the “Flying V Lovers Club”: “Nandemo-kun”



A sound quality tester for capacitors and wiring materials. Not only can you connect various materials to the alligator clips to check sound quality, but you can also verify how the sound changes when adjusting the volume. Depending on what you connect to the alligator clips, the possibilities are endless.
<18> A creation by Haru: “Wah Pedal”



A wah pedal painted in refreshing colors.A stage-friendly modification that incorporates an acrylic plate into the bottom to improve visibility, with LEDs illuminating the entire underside. It features true bypass and a built-in buffer.
<19> "Cosmetics Storage Box" by Futosato Tenjino-yaro



Inspired by the idea of adding more over-the-top and extravagant touches to the effects board, this project transforms a cosmetics box into a fortress.It folds down to a compact size—could this throw a wrench into future effects board designs!?
<20> Work by Hideaki Onuki: “Knockdown”



He’s converted legendary units like the BOSS OD-1, Maxon CP-101, and Pearl AD-08 into rack-mountable versions. They can be powered by AC using an original power supply circuit. All circuit boards are removable, so you can even put them back into their original compact enclosures for use.


<21> TJ Mods’ creation: “BOSS OC-2 Bass Edition”

An OC-2 adapted for bass. A toggle switch offers three presets, ranging from synth-bass-like tones to dark, deep bass. The control plate features sleek brass.


<22> A project by Ikisugita DIY: “Digital Delay”

Vintage capacitors have been added to a digital delay. A high-cut filter produces a smooth, analog-style tone. An added switch illuminates the capacitors.


<23> A project by fffworks: “BOSS CE-2R”

An effect level control has been added to the CE-2.Named “CE-2R” in homage to the evolution from the PH-1 to the PH-1R. It also features a reworked tone circuit and true bypass implemented using latches.


<24> Mr. Kobayashi’s creation: “BOSS SD-1/Crybaby”

A half-rack version of the BOSS SD-1 and Jen’s Cry Baby Super. Each can be used independently and runs on batteries. The half-rack design was intended for use in conjunction with ROCKMAN.


<25> Case-ke’s creation: “Ping-Pong Generator”

Pressing the button triggers a “ping-pong” sound, and the two knobs (yellow and green) allow you to adjust the pitch of the “ping” and “pong” sounds
. A footswitch lets you toggle between bypass and ping-pong modes.


<26> Mr. Kudo’s creation: “BOSS OD-2 Mod.”

The OD-2’s tone circuit has been rearranged into treble and bass controls, and the Turbo mode switch has been changed to a toggle switch. The power supply circuit has also been modified, and the exterior features a green-based marble finish.


<27> Mr. Sekine’s creation: “Big Muff/BD-2”

The BOSS BD-2 circuit board is directly docked into a BIG MUFF enclosure. Of course, each can be turned on or off independently, allowing you to switch between clean, rhythm, and lead tones with an alternative rock sound.


<28> “The Return of” Impromptu Guitar Works’ creation: “Lost Technology”

A modification completed under the concept of “the future 12,000 years from now.”The scene depicts whether future humanity will be able to unravel the mystery of the OD-2—now an ancient ruin—and bring it back to life.
Vote here


<29> “Deadpool” by Dear Neighbor

A unit featuring bold decorations. A sword is stuck where the knobs used to be, and the battery compartment is decorated with everyday items that give it a lived-in feel. The words “DEADPOOL” are collaged onto the bottom surface.


<30> Valkyrie Spear by KENZO: “Fat Fuzz Booster”

A unit born out of respect for the Fuzz Face. It features an added clean booster that can be used on its own, aiming to deliver everything from destructive sounds to smooth lead tones, as well as a bell-like clean sound controlled by the volume knob.


Video Part 3


Thank you very much to everyone who submitted an entry and voted.


The judging results and the announcement of the sponsored awards will be posted on December 13 at

in Guitar Magazine, on our store’s website, and on BARKS.


Please look forward to it.