Stompbox Schematics Index
- modman
- a d m i n
Information
- Posts: 4871
- Joined: 19 Jun 2007, 16:57
- Has thanked: 4353 times
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A/DA
A/DA - Ampulator [schematic]
A/DA - Final Phase [schematic]
A/DA - Flanger see: http://moosapotamus.net/ADAflanger-SAD1024.html - but on MN3007 Retrofit boards check this warning
A/DA - Harmony Synthesizer partial schematics
Ace Tone
Ace Tone - FM-1 Fuzz Master 1966-1968 [schematic]
Ace Tone FM-2 - thread
Amplifier Coorporation of America
Fuzz King schematic
Anderton, Craig
Craig Anderton's circuits
Apollo
Apollo Treble and Bass Booster schematic
Aria
Aria - AUM-1 Ultra Metal schematic by Bernarduur
Armstrong, Dan
Dan Armstrong Purple Peaker factory schematic - vero layout by Torchy
Dan Armstrong Yellow Humper factory schematic
Baldwin-Burns
Baldwin Burns Buzzaround Fuzz (1965-1968?) gut shots & discusion - schematic - veroboard layout by Torchy
Behringer
Behringer Hellbabe Wah schematic & mods
Behringer AB200 Dual A/B Switchschematic & mods
Behringer Vintage Phaser VP1 true bypass mod --> EH Small Stone
Behringer Vintage Tube Ovedrive VT911 schematic and mods
Boss
Boss AW-2 gut shots
Boss BD-2 Blues Driver schematic
Boss BF-1 Flanger schematic
Boss DS-1 Distortion project files for the new version - pimp-my-pedal thread
Boss CE-3 Chorus schematic
Boss DD-2/3 Digital Delay repair hints
Boss DM-2 Delay schematic & gut shots
Boss DN-2 Dyna Drive gut shots (DSP)
Boss HM-2 Heavy Metal schematic & mods
Boss FZ-3 Fuzz schematic
Boss OD-3 Overdrive schematic
Boss PH-1r schematic
Boss PD-1 Distortion Rocker gut shots
Boss TR-2 Tremolo schematic & mods
Chandler
Chandler Digital Stereo Delay schematic
Colorsound
Colorsound Jumbo Tonebender schematic
Colorsound Overdriver / Power Boost schematic & project files
Colorsound Phaze Four gut shots
Colorsound Ring Modulator gut shots
Colorsound Supasustain (1976) schematic
Coloround Supa Tonebender (1978) schematic & gut shots
Colorsound Sweep Pedal gut shots
Colorsound Tremelo - guts shot & schematic
Coron
Coron 70 Space Machine gut shots
Dallas Arbiter
Dallas Arbiter TremFace schematic
Dallas Arbiter Rangemaster discussion, schematic, build report and samples
Dearmond
Dearmond - Twister Phase Shifter gutshots
Dharma Sound
Dharma Sound Phaser gut shots
DOD
DOD Buzz Box gut shots
DOD Compressor 280 guts shots & schematic
DOD FX-15 Swell Pedal schematic & gut shots
DOD FX-25 Auto Wah schematic & gut shots
DOD FX-45 Stereo Reverb gut shots
Dunlop
Dunlop JH-F1 Jimi Hendrix Fuzz Face schematic
Dunlop JH-2 Jimi Hendrix Fuzz Face schematic
Dunlop QZ-1 Q Zone schematic
George Dennis
George Dennis Blues Wizard analysis
Eko
Eko Multitone hires gut shots
Electro Harmonix
Electro Harmonix Axis schematic & gut shots
Electro Harmonix Attack Equalizer schematic & gut shots
Electro Harmonix Big Muff Pi 1977 DIY project files for vero and pcb
Electro Harmonix Big Muff Pi 2007 schematic
Electro Harmonix Germanium OD gut shots
Electro Harmonix Holy Grail DSP
Electro Harmonix - Low Frequency Compressor schematic
Electro Harmonix Memory Man DIY project by Kaputepalla
Electro Harmonix Memory Man Deluxe gut shots & mods
Electro Harmonix Metal Muff schematic
Electro Harmonix Mini Mixer gut shots
Electro Harmonix Mini Qtron gut shots - DIY project files by Bajaman
Electro Harmonix Polychorus repair tips & schematic
Electro Harmonix Slap Back Echo (1978) factory schematic
Electro Harmonix Small Clone project files by Bajaman
Electro Harmonix Talking Pedal schematic & files
Electro Harmonix Zipper schematic - gut shots
Foxx
Foxx Foot Phase gut shot & discussion
Ibanez
Ibanez Analog Delay AD-80 schematics & guts
Ibanez Analog Delay AD-9 schematic & guts
Ibanez Digital Chorus DSC-10 schematic
Ibanez Flanger FL-303 gut shots
Ibanez Phaser PH-5 info
Ibanez Phaser PT-9 service manual
Ibanez Phasetone II PT-707 schematic
Ibanez Rotary Chorus RC-99 schematic & DIY project files
Inta
Inta Wah (1969) gut shots
Jen
Jen Dynamic Sustainer gut shot
Jordan Electronics
Jordan Bosstone schematic & shots
Jordan Compressor J-730 analysis
Kay Electronics
Kay Fuzztone (F-1) schematic
Keio
Keio Synthesizer Traveler guts shots
Guild
Guild Foxey Lady (2 knob) schematic
Heathkit
Heathkit TA-28 gutshot & parts layout
Maestro
Maestro FMZ-1 Fuzz schematic and discussion
Maestro MPF-1 Fuzz schematic
Maestro Full Range Boost FRB-1 gut shots - schematic
Maestro Fuzz-Tone FZ1 (1962) patent & schematic
Maestro Fuzz-Tone FZ1-A (1965) gut shot discussion & schematic
Maestro Fuzz-Tone FZ1-B version 1 schematic by AG
Maestro Fuzz-Tone FZ1-B version 2 schematic by Andrew Carrell
Maestro Super Fuzz FZ1-S DIY project files at GGG - gut shots
Memphis
Memphis Vintage Tremelo gut shots
Mesa
Mesa Bottle Rocket guts shots & schematic
Morley
Morley Power Fuzz Wah schematic (rev. 1981)
Musitronics
Musitronics - Micron II schematic
Musitronics - Mutron III (1975) factory schematic
Musictronics - Phasor II schematic
Musitronics / Dan Armstrong schematics
Musitronics - Octave Divider schematics and files
MXR
MXR 6 Band Graphic EQ gut shots
MXR Bass Octave schematic by Stompmodder
MXR Classic 108 Fuzz gut shots
MXR Distortion III M-115 schematic
MXR Flanger M-117 schematic & more
MXR Flanger/Doubler M-120 schematic & gut shots
MXR Phase 90 gut shots
MXR Phase 100 versions & gut shots v2
MXR Smart Gate gut shots
MXR Zakk Wylde ZW-44 schematic
Orange
Orange Treble and Bass Booster (?) discussion schematic?
Pearl
Pearl F-605 Analog Delay gut shots
Proco
Proco Brat gut shots
Proco Turbo Rat gut shots
Proco Rat schematic - History of the Proco Rat by Dosmun & version info
Proco Rat 2 schematic
Roland
Roland AS-1 Sustainer gut shots & schematic
Roland AP-2 Phase II gut shots
Roland AP-5 Phaser schematic
Roland AP-7 Phaser schematic/service notes
Roland AP-5 Phaser schematic
Ross
Ross Direct Box / Noise Gate gut shots
Ross Distortion gut shots narrow box - schematic & layout files
Ross Stereo Delay schematic
Schaller
Schaller Bow Wow Yoy Yoy gut shots
Schaller Fuzz SI schematic by AG & gutschots
Schaller Fuzz Ge gutschot
Schaller Phaser I (1976) schematic
Schaller Rotor Sound schematic & guts
Schaller Tremolo schematic & project files
Shin-Ei
Shin-Ei FY-6 Fuzz project files by Dirk Hendrik
Shin-Ei Surf/Volume/Hurricane/Siren Wah gutshots - schematic
Sekova
Sekova Power Booster MODEL 2013 schematic + project
Sola Sound
Sola Sound Tonebender Mark I (1965) schematic
Sola Sound Tonebender Professional Mark II schematic
Sola Sound Tonebender Mark III (1969-70?) gut shots
Sunn
Sunn Buzz gut shots - schematic
Thomas Organ Company
TOC Cry Baby Stereo Fuzz Wah (9-3701) gut shots
Tycobrahe
Tycobrahe Analog Delay Line schematic & gut shots
Tycobrahe Direct Box - Noise Fader schematic & gut shots
Tycobrahe Pedalflanger schematic & gut shots
Tycobrahe Parapedal schematic & gut shots
Univox
Univox Univibe manual & schematic
Voodoo Lab
Voodoo Lab Bosstone schematic
Vox
Vox V1902 Flanger schematic
Vox V806 Treble Booster (06/1966) schematic
Vox V809 - Repeat Percussion schematic - layout files
Vox V810 Bass Booster (06/1966) schematic
Vox V816 Distortion Booster (06/1966) schematic
Vox V8161 Deluxe Distortion Booster (04/1967) schematic
Vox V8162 Distortion Booster (05/1969) schematic
Vox V8401 Treble and Bass Booster (1969) track side guts - schematic
20/08/2008: DOD 280 Compressor G&S added
20/08/2008: Maestro Fuzz Tone FZ-1B version 2 by AC added
A/DA - Ampulator [schematic]
A/DA - Final Phase [schematic]
A/DA - Flanger see: http://moosapotamus.net/ADAflanger-SAD1024.html - but on MN3007 Retrofit boards check this warning
A/DA - Harmony Synthesizer partial schematics
Ace Tone
Ace Tone - FM-1 Fuzz Master 1966-1968 [schematic]
Ace Tone FM-2 - thread
Amplifier Coorporation of America
Fuzz King schematic
Anderton, Craig
Craig Anderton's circuits
Apollo
Apollo Treble and Bass Booster schematic
Aria
Aria - AUM-1 Ultra Metal schematic by Bernarduur
Armstrong, Dan
Dan Armstrong Purple Peaker factory schematic - vero layout by Torchy
Dan Armstrong Yellow Humper factory schematic
Baldwin-Burns
Baldwin Burns Buzzaround Fuzz (1965-1968?) gut shots & discusion - schematic - veroboard layout by Torchy
Behringer
Behringer Hellbabe Wah schematic & mods
Behringer AB200 Dual A/B Switchschematic & mods
Behringer Vintage Phaser VP1 true bypass mod --> EH Small Stone
Behringer Vintage Tube Ovedrive VT911 schematic and mods
Boss
Boss AW-2 gut shots
Boss BD-2 Blues Driver schematic
Boss BF-1 Flanger schematic
Boss DS-1 Distortion project files for the new version - pimp-my-pedal thread
Boss CE-3 Chorus schematic
Boss DD-2/3 Digital Delay repair hints
Boss DM-2 Delay schematic & gut shots
Boss DN-2 Dyna Drive gut shots (DSP)
Boss HM-2 Heavy Metal schematic & mods
Boss FZ-3 Fuzz schematic
Boss OD-3 Overdrive schematic
Boss PH-1r schematic
Boss PD-1 Distortion Rocker gut shots
Boss TR-2 Tremolo schematic & mods
Chandler
Chandler Digital Stereo Delay schematic
Colorsound
Colorsound Jumbo Tonebender schematic
Colorsound Overdriver / Power Boost schematic & project files
Colorsound Phaze Four gut shots
Colorsound Ring Modulator gut shots
Colorsound Supasustain (1976) schematic
Coloround Supa Tonebender (1978) schematic & gut shots
Colorsound Sweep Pedal gut shots
Colorsound Tremelo - guts shot & schematic
Coron
Coron 70 Space Machine gut shots
Dallas Arbiter
Dallas Arbiter TremFace schematic
Dallas Arbiter Rangemaster discussion, schematic, build report and samples
Dearmond
Dearmond - Twister Phase Shifter gutshots
Dharma Sound
Dharma Sound Phaser gut shots
DOD
DOD Buzz Box gut shots
DOD Compressor 280 guts shots & schematic
DOD FX-15 Swell Pedal schematic & gut shots
DOD FX-25 Auto Wah schematic & gut shots
DOD FX-45 Stereo Reverb gut shots
Dunlop
Dunlop JH-F1 Jimi Hendrix Fuzz Face schematic
Dunlop JH-2 Jimi Hendrix Fuzz Face schematic
Dunlop QZ-1 Q Zone schematic
George Dennis
George Dennis Blues Wizard analysis
Eko
Eko Multitone hires gut shots
Electro Harmonix
Electro Harmonix Axis schematic & gut shots
Electro Harmonix Attack Equalizer schematic & gut shots
Electro Harmonix Big Muff Pi 1977 DIY project files for vero and pcb
Electro Harmonix Big Muff Pi 2007 schematic
Electro Harmonix Germanium OD gut shots
Electro Harmonix Holy Grail DSP
Electro Harmonix - Low Frequency Compressor schematic
Electro Harmonix Memory Man DIY project by Kaputepalla
Electro Harmonix Memory Man Deluxe gut shots & mods
Electro Harmonix Metal Muff schematic
Electro Harmonix Mini Mixer gut shots
Electro Harmonix Mini Qtron gut shots - DIY project files by Bajaman
Electro Harmonix Polychorus repair tips & schematic
Electro Harmonix Slap Back Echo (1978) factory schematic
Electro Harmonix Small Clone project files by Bajaman
Electro Harmonix Talking Pedal schematic & files
Electro Harmonix Zipper schematic - gut shots
Foxx
Foxx Foot Phase gut shot & discussion
Ibanez
Ibanez Analog Delay AD-80 schematics & guts
Ibanez Analog Delay AD-9 schematic & guts
Ibanez Digital Chorus DSC-10 schematic
Ibanez Flanger FL-303 gut shots
Ibanez Phaser PH-5 info
Ibanez Phaser PT-9 service manual
Ibanez Phasetone II PT-707 schematic
Ibanez Rotary Chorus RC-99 schematic & DIY project files
Inta
Inta Wah (1969) gut shots
Jen
Jen Dynamic Sustainer gut shot
Jordan Electronics
Jordan Bosstone schematic & shots
Jordan Compressor J-730 analysis
Kay Electronics
Kay Fuzztone (F-1) schematic
Keio
Keio Synthesizer Traveler guts shots
Guild
Guild Foxey Lady (2 knob) schematic
Heathkit
Heathkit TA-28 gutshot & parts layout
Maestro
Maestro FMZ-1 Fuzz schematic and discussion
Maestro MPF-1 Fuzz schematic
Maestro Full Range Boost FRB-1 gut shots - schematic
Maestro Fuzz-Tone FZ1 (1962) patent & schematic
Maestro Fuzz-Tone FZ1-A (1965) gut shot discussion & schematic
Maestro Fuzz-Tone FZ1-B version 1 schematic by AG
Maestro Fuzz-Tone FZ1-B version 2 schematic by Andrew Carrell
Maestro Super Fuzz FZ1-S DIY project files at GGG - gut shots
Memphis
Memphis Vintage Tremelo gut shots
Mesa
Mesa Bottle Rocket guts shots & schematic
Morley
Morley Power Fuzz Wah schematic (rev. 1981)
Musitronics
Musitronics - Micron II schematic
Musitronics - Mutron III (1975) factory schematic
Musictronics - Phasor II schematic
Musitronics / Dan Armstrong schematics
Musitronics - Octave Divider schematics and files
MXR
MXR 6 Band Graphic EQ gut shots
MXR Bass Octave schematic by Stompmodder
MXR Classic 108 Fuzz gut shots
MXR Distortion III M-115 schematic
MXR Flanger M-117 schematic & more
MXR Flanger/Doubler M-120 schematic & gut shots
MXR Phase 90 gut shots
MXR Phase 100 versions & gut shots v2
MXR Smart Gate gut shots
MXR Zakk Wylde ZW-44 schematic
Orange
Orange Treble and Bass Booster (?) discussion schematic?
Pearl
Pearl F-605 Analog Delay gut shots
Proco
Proco Brat gut shots
Proco Turbo Rat gut shots
Proco Rat schematic - History of the Proco Rat by Dosmun & version info
Proco Rat 2 schematic
Roland
Roland AS-1 Sustainer gut shots & schematic
Roland AP-2 Phase II gut shots
Roland AP-5 Phaser schematic
Roland AP-7 Phaser schematic/service notes
Roland AP-5 Phaser schematic
Ross
Ross Direct Box / Noise Gate gut shots
Ross Distortion gut shots narrow box - schematic & layout files
Ross Stereo Delay schematic
Schaller
Schaller Bow Wow Yoy Yoy gut shots
Schaller Fuzz SI schematic by AG & gutschots
Schaller Fuzz Ge gutschot
Schaller Phaser I (1976) schematic
Schaller Rotor Sound schematic & guts
Schaller Tremolo schematic & project files
Shin-Ei
Shin-Ei FY-6 Fuzz project files by Dirk Hendrik
Shin-Ei Surf/Volume/Hurricane/Siren Wah gutshots - schematic
Sekova
Sekova Power Booster MODEL 2013 schematic + project
Sola Sound
Sola Sound Tonebender Mark I (1965) schematic
Sola Sound Tonebender Professional Mark II schematic
Sola Sound Tonebender Mark III (1969-70?) gut shots
Sunn
Sunn Buzz gut shots - schematic
Thomas Organ Company
TOC Cry Baby Stereo Fuzz Wah (9-3701) gut shots
Tycobrahe
Tycobrahe Analog Delay Line schematic & gut shots
Tycobrahe Direct Box - Noise Fader schematic & gut shots
Tycobrahe Pedalflanger schematic & gut shots
Tycobrahe Parapedal schematic & gut shots
Univox
Univox Univibe manual & schematic
Voodoo Lab
Voodoo Lab Bosstone schematic
Vox
Vox V1902 Flanger schematic
Vox V806 Treble Booster (06/1966) schematic
Vox V809 - Repeat Percussion schematic - layout files
Vox V810 Bass Booster (06/1966) schematic
Vox V816 Distortion Booster (06/1966) schematic
Vox V8161 Deluxe Distortion Booster (04/1967) schematic
Vox V8162 Distortion Booster (05/1969) schematic
Vox V8401 Treble and Bass Booster (1969) track side guts - schematic
20/08/2008: DOD 280 Compressor G&S added
20/08/2008: Maestro Fuzz Tone FZ-1B version 2 by AC added
Last edited by modman on 20 Aug 2008, 10:07, edited 24 times in total.
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- pinkjimiphoton
- Transistor Tuner
Information
- Posts: 1244
- Joined: 12 Sep 2010, 19:03
- my favorite amplifier: my own, a redesigned princeton
- Completed builds: so fucking many goddamn pedals it would make your ass hurt just looking at 'em all!!!!!
there's videos that totally suck of about 90 of 'em here:
http://youtube.com/666pinkster
gimme a like: http://facebook.com/pinkjimiphotonrocks - Location: new world order land (formerly la-la land)
- Has thanked: 358 times
- Been thanked: 477 times
- Contact:
hi guys, this guy seems to have some schems i haven't seen before...
http://sites.google.com/site/electrocon ... schematics
http://sites.google.com/site/electrocon ... schematics
"When the power of love overcomes the love of power the world will know peace."
Slava Ukraini!
Slava Ukraini!
- toneman
- Resistor Ronker
Information
- Posts: 343
- Joined: 17 Jul 2007, 13:05
- my favorite amplifier: anything that works
- Completed builds: meatolation, wobolation, ringolation clones, PAiA synths/modulars, dipthonizer clone, MOTM modules, pedal mods and repairs
- Location: sacatomatoes, Kali4neeaa
- Has thanked: 181 times
- Been thanked: 45 times
I think ALL the Lovetones have been cloned now!!!
Tone-to-the-Bone
- toneman
- Resistor Ronker
Information
- Posts: 343
- Joined: 17 Jul 2007, 13:05
- my favorite amplifier: anything that works
- Completed builds: meatolation, wobolation, ringolation clones, PAiA synths/modulars, dipthonizer clone, MOTM modules, pedal mods and repairs
- Location: sacatomatoes, Kali4neeaa
- Has thanked: 181 times
- Been thanked: 45 times
Yep.
needs updating.
found a couple of dead links right off the bat...

needs updating.
found a couple of dead links right off the bat...

Tone-to-the-Bone
- rocklander
- Old Solderhand
Information
- Posts: 2726
- Joined: 18 Apr 2008, 11:33
- my favorite amplifier: my jansen bassman 50
- Completed builds: rebote 2.5; supreaux; odie; heartthrob tremolo; ross phaser; dr. boogey; thor; baja black toast; slow gear attack, rebote, tri-vibe, small clone, little angel, magnus modulus, echo base, hex fuzz, big muff, 22/7.
- Location: Rotorua, New Zealand
- Has thanked: 1406 times
- Been thanked: 231 times
- Contact:
if you have the corrections (or even the names of the ones that are failing) can you articulate them here? that'd make it easier to amend rather than having to go through the lot .. onya 

world's greatest tautologist ...in the world
Ronsonic wrote:...the lower the stakes the more vicious the combat.
atreidesheir wrote:He should be punched in the vagina.
- toneman
- Resistor Ronker
Information
- Posts: 343
- Joined: 17 Jul 2007, 13:05
- my favorite amplifier: anything that works
- Completed builds: meatolation, wobolation, ringolation clones, PAiA synths/modulars, dipthonizer clone, MOTM modules, pedal mods and repairs
- Location: sacatomatoes, Kali4neeaa
- Has thanked: 181 times
- Been thanked: 45 times
the one I happened to be looking for was the EH Metal Muff.
the picture links at the beginning of the thread were dead.
Maybe because they were banned(?)
Scrolling down, I eventually found a version of the Metal Muff.
Also was wondering where all the Lovetones went(?)
Then, I discovered that FSB has them in the Boutique schematic index.
all is well....

the picture links at the beginning of the thread were dead.
Maybe because they were banned(?)
Scrolling down, I eventually found a version of the Metal Muff.
Also was wondering where all the Lovetones went(?)
Then, I discovered that FSB has them in the Boutique schematic index.
all is well....

Tone-to-the-Bone
- rocklander
- Old Solderhand
Information
- Posts: 2726
- Joined: 18 Apr 2008, 11:33
- my favorite amplifier: my jansen bassman 50
- Completed builds: rebote 2.5; supreaux; odie; heartthrob tremolo; ross phaser; dr. boogey; thor; baja black toast; slow gear attack, rebote, tri-vibe, small clone, little angel, magnus modulus, echo base, hex fuzz, big muff, 22/7.
- Location: Rotorua, New Zealand
- Has thanked: 1406 times
- Been thanked: 231 times
- Contact:
right... so there's no problem with the links in this thread.. it's the threads they go to.. prolly best to report it at the threads, cos this one kinda does what it's supposed to.. has links to fsb threads..
unless there's some links here that don't point to fsb threads?
unless there's some links here that don't point to fsb threads?
world's greatest tautologist ...in the world
Ronsonic wrote:...the lower the stakes the more vicious the combat.
atreidesheir wrote:He should be punched in the vagina.
- pinkjimiphoton
- Transistor Tuner
Information
- Posts: 1244
- Joined: 12 Sep 2010, 19:03
- my favorite amplifier: my own, a redesigned princeton
- Completed builds: so fucking many goddamn pedals it would make your ass hurt just looking at 'em all!!!!!
there's videos that totally suck of about 90 of 'em here:
http://youtube.com/666pinkster
gimme a like: http://facebook.com/pinkjimiphotonrocks - Location: new world order land (formerly la-la land)
- Has thanked: 358 times
- Been thanked: 477 times
- Contact:
guys, anything that's "missing", let me know, and if i have it i will post it. gotta LOT of schematic backed up at this point!! 30+ gigs
"When the power of love overcomes the love of power the world will know peace."
Slava Ukraini!
Slava Ukraini!
Information
- Posts: 4
- Joined: 16 Jan 2015, 11:00
Does anybody have a gutshot of a MXR Bass Octave Deluxe??
Capacitor C16 got knocked off in mine, and i need to know the value so i can find a replacement :/
Any help is appreciated
Capacitor C16 got knocked off in mine, and i need to know the value so i can find a replacement :/
Any help is appreciated
- modman
- a d m i n
Information
- Posts: 4871
- Joined: 19 Jun 2007, 16:57
- Has thanked: 4353 times
- Been thanked: 2095 times
A/DA - Ampulator schematic
A/DA - Final Phase [schematic]
A/DA - Flanger see: http://moosapotamus.net/ADAflanger-SAD1024.html - but on MN3007 Retrofit boards
A/DA - Harmony Synthesizer partial schematics
A/DA - Final Phase [schematic]
A/DA - Flanger see: http://moosapotamus.net/ADAflanger-SAD1024.html - but on MN3007 Retrofit boards
A/DA - Harmony Synthesizer partial schematics
Please, support freestompboxes.org on Patreon for just 1 pcb per year! Or donate directly through PayPal