Boutique Stompboxes dissected...

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.

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READ THIS before posting!!

Last post by modman « 11 Sep 2011, 13:52

by modman » 11 Sep 2011, 13:52

Rating: 1.7%

This section is devoted to circuit analysis . This means...

requests for schematics or layouts will be moved the the Request section
messages about your sick puppy or your new Android powered phone should go into the FSB Café
debugging questions will be moved to the Workbench
useless post (containing no extra information) may get deleted to preserve the readability of the thread.
you should check whether a thread exists about the unit in question, and add your info in that thread.
you...

0 Replies

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View the latest post READ THIS before posting!!
Last post modman
11 Sep 2011, 13:52
The Goose, the Middleman, the Idolmaker and Gomer Pyle

Last post by noelgrassy « 01 Feb 2008, 19:42
Replies: 91
by CS Jones » 07 Dec 2007, 21:41
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Clay, I would really love to hear the full story on this one. It seems like you have lots to tell!

Thanks LPD. How much do you want to hear? The Reader's Digest version or the pull up a chair, get comfortable because it'll be a while version ?

I'll try to finish something up this weekend. Long and short versions, if you're still interested. :)
91 Replies

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Last post noelgrassy
01 Feb 2008, 19:42
Schumann PLL [traced]

Last post by digi2t « Yesterday, 22:46
Replies: 142
by digi2t » 07 Apr 2013, 05:03
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Rating: 28.9%

Hi everyone,

I have the great honor of being entrusted with a Schumann PLL for repair. I've also taken the time to trace it. Despite the goop, and rats nest wiring which prevented me from using my camera to trace, I present my hand drawn papers of this piece of vaporware.

Keep in mind that the board drawings are of the trace side, so the IC pin numbers have to be mirrored.

I didn't mention on the board 1 page that the 240R, 120R, 110R, the cut 10K, 1M, 200K, and 150K are metal film....
142 Replies

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View the latest post Re: Schumann PLL
Last post digi2t
Yesterday, 22:46
JHS - Bender [traced]

Last post by jalmonsalmon « 24 Sep 2023, 21:01
Replies: 13
by A Paz » 18 Sep 2023, 02:52

Rating: 5.4%

Bender 1.jpeg Bender 2.jpeg Bender 3.jpeg Bender 4.jpeg JHS Bender Schematic.png

Here is my trace of the JHS Bender. I was interested in the way that he got germanium sound from silicon transistors so I thought I would give tracing it a go. I measured all of the resistors in the circuit, and the values seemed to make sense so I didn't cut any traces. I did however, cut all the traces around the capacitors to measure them so I know they are correct.

While tracing, I removed Q2 in order to...

13 Replies

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View the latest post Re: JHS - Bender
Last post jalmonsalmon
24 Sep 2023, 21:01
Death by Audio - Fuzz War [traced]

Last post by theehman « 22 Sep 2023, 11:47
Replies: 163
by John Lyons » 20 Jun 2008, 22:36
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Rating: 6.3%

The Death by Audio Fuzz War is pretty cool and highly variable tone fuzz. Gets a nice scooped big muff all the way through Maestro fuzz tone and shin ei screaming fuzz type sounds. The tone varies but the fuzz is all out all the time.

I have a few pics of the top and bottom of the board as well as some shots with the board held up to a light so you can see the traces through the board.
I was going to trace this but I don't have the time right now.
If you want to trace from these pics let me...
163 Replies

92557 Views

View the latest post Re: Death by Audio - Fuzz Wa
Last post theehman
22 Sep 2023, 11:47
LEMON Amps - Fly Classic - 40w amp in a 125b [traced]

Last post by Lemontheo « 21 Sep 2023, 17:22
Replies: 2
by Lemontheo » 20 Sep 2023, 15:21

Rating: 4.5%

Hi,

i'm the founder of LEMON Amps , and here is the schematic of the Fly Classic. A 40w classic amp in a 125b
CF04F668-6F3A-4921-829A-677874B3FDC0.jpg
64E85B13-517E-4C02-985B-CAD0955C8875.jpg
Fly Classic-Schematic.pdf
Fly-Classic-layout.pdf

Cheers

2 Replies

1584 Views

View the latest post Re: LEMON Amps - Fly Classic …
Last post Lemontheo
21 Sep 2023, 17:22
Moen - UL-TD Tubedriver

Last post by dmc777 « 21 Sep 2023, 14:13
Replies: 7
by Old Gregg » 30 Nov 2010, 08:30

Rating: 0.2%

ul_tds1.GIF
ul_td1.GIF

ECC83/12AX7 real tube inside, high quality components make it much different with other overdrive pedals, transparent and warm sound with extremely low noise, try the tube drive if you're fans of Gilmour or Johnson. For sophisticated user, the board level bias trim could adjust the tube plate voltage to have different experience.
The wall warts power adapter is removeable, it's convinient to pack up the pedals.
Moreover, it could be the smallest real tube drive...

7 Replies

2196 Views

View the latest post Re: Moen - UL-TD Tubedriver
Last post dmc777
21 Sep 2023, 14:13
LEMON Amps - Hammer Fuzz [traced]

Last post by karul « 21 Sep 2023, 12:52
Replies: 2
by Lemontheo » 20 Sep 2023, 15:15

Rating: 2.2%

Hi,

i'm the founder of LEMON Amps , and here is the schematic of the Hammer Fuzz.

Hammer Fuzz.pdf

Cheers

2 Replies

659 Views

View the latest post Re: LEMON Amps - Hammer Fuzz
Last post karul
21 Sep 2023, 12:52
LEMON Amps - Night Screamer

Last post by Lemontheo « 20 Sep 2023, 15:13

by Lemontheo » 20 Sep 2023, 15:13

Rating: 0.9%

Hi,

i'm the founder of LEMON Amps , and here is the schematic of the Night Screamer.

Night Screamer-V2.pdf

Cheers

0 Replies

246 Views

View the latest post LEMON Amps - Night Screamer
Last post Lemontheo
20 Sep 2023, 15:13
LEMON Amps - T bone distortion

Last post by Lemontheo « 20 Sep 2023, 15:10

by Lemontheo » 20 Sep 2023, 15:10

Rating: 1.1%

Hi,

i'm the founder of LEMON Amps , and here is the schematic of the T bone Distortion.

T-bone.pdf

Cheers

0 Replies

288 Views

View the latest post LEMON Amps - T bone distorti …
Last post Lemontheo
20 Sep 2023, 15:10
LEMON Amps - Dirty Booster

Last post by Lemontheo « 20 Sep 2023, 15:07

by Lemontheo » 20 Sep 2023, 15:07

Rating: 1.5%

Hi,

i'm the founder of LEMON Amps , and here is the schematic of the Dirty Booster.

Dirty Booster.pdf

Cheers

0 Replies

245 Views

View the latest post LEMON Amps - Dirty Booster
Last post Lemontheo
20 Sep 2023, 15:07
G.S. Wyllie "Wylo"

Last post by modman « 12 Sep 2023, 10:57
Replies: 10
by PurplePeopleEater » 03 Oct 2008, 15:53

Traced from a unit I used to own :

10 Replies

2565 Views

View the latest post Re: G.S. Wyllie "Wylo&q …
Last post modman
12 Sep 2023, 10:57
Origin Effects Cali76?

Last post by dmc777 « 12 Sep 2023, 07:03
Replies: 9
by smear » 03 Mar 2023, 20:34

Rating: 2.8%

anyone have one of these they can open up?

the original 1176 is crazy expensive these days. i thought it'd be pretty elaborate, but looking at the original 1176 schematic, seems like a couple JFETs and a some BJTs. presumably the pedal removed the 5532 differential input. and the marketing doesn't mention any transformers so i guess they skipped that too. runs on +30V and -10V, nothing too crazy.

they're charging $359 for a pedal clone, and i bet most of that price is just based on the...

9 Replies

2207 Views

View the latest post Re: Origin Effects Cali76?
Last post dmc777
12 Sep 2023, 07:03
Wyllie Moonrock [traced]

Last post by bumblebee « 07 Sep 2023, 04:09
Replies: 26
by soggybag » 14 Aug 2014, 17:42
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Here are some pictures of the Wyllie Moonrock. I started trying to reverse this. There are some pictures over at TheGearPage, here:

Here are some images I made in photoshop.

This picture tries to show the top, which hopefully aligns with the next image:

Here's the bottom:

Then I drew in all of the PCB connections, red circles, and tried to fill in values for parts.
26 Replies

14961 Views

View the latest post Re: Wyllie Moonrock
Last post bumblebee
07 Sep 2023, 04:09
Demedash Effects - T120 Videotape Echo Pedal [traced]

Last post by AlphaMoose « 07 Sep 2023, 03:46
Replies: 30
by Seiche » 06 Apr 2019, 11:31
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Rating: 6.7%

Saw this on Insta. Apparently it's the deluxe version with two switches that hasn't even come out yet.

Almost all the part values and connections are good to see, so one should be able to do pretty good trace of this.

The only tricky part is that there are smd parts on both sides of the pcb :blackeye

demedasht120deluxe2.PNG
demedasht120deluxe1.jpg
30 Replies

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View the latest post Re: Demedash Effects - T120 …
Last post AlphaMoose
07 Sep 2023, 03:46
Frantone - Vibutron [traced]

Last post by BMS1971 « 04 Sep 2023, 16:01
Replies: 27
by KindaFuzzy » 13 Apr 2012, 00:36
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Finally found one of these, and there's a lot less inside than I thought. Full gut shot gallery here:

Chips are ICL8038ccpd, ua741cp, tlc2262cp, and a 2n7000 mosfet. Tracing will be done soon.
27 Replies

17917 Views

View the latest post Re: Frantone - Vibutron
Last post BMS1971
04 Sep 2023, 16:01
Fairfield Circuitry - The Barbershop (gut) [traced]

Last post by JonesXavier « 31 Aug 2023, 13:46
Replies: 153
by culturejam » 20 Feb 2009, 15:23
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Rating: 8.2%

Happened to see this over at TGP. Here's the original web site:

Unfinished box with letter stamp markings.

Went fishing for a gut shot at TGP and got the pic that is attached. 8)

Couldn't get the other side, unfortunately. But somehow, I'll bet that BajaMan can guess the circuit by looking at the traces. :thumbsup
153 Replies

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View the latest post Re: Fairfield Circuitry - Th …
Last post JonesXavier
31 Aug 2023, 13:46
Greer Amps - Soma 63 [traced]

Last post by blackboarcult « 28 Aug 2023, 12:25
Replies: 5
by modman » 27 Aug 2023, 17:24

Rating: 2.2%

Are builders still building these jfet emulators ?

Screen Shot 2023-08-27 at 19.08.06.png

5 Replies

1228 Views

View the latest post Re: Greer Amps - Soma 63
Last post blackboarcult
28 Aug 2023, 12:25
Bogner - Ecstasy Red

Last post by snakepit86 « 26 Aug 2023, 17:40
Replies: 69
by rs » 31 Oct 2012, 19:59
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Hi guys,
has anyone tried the Bogner Ecstasy Red pedal? From the youtube videos it looks awsome.

Thanks.
69 Replies

43734 Views

View the latest post Re: Bogner - Ecstasy Red
Last post snakepit86
26 Aug 2023, 17:40
AMT - Legend Amp Series 2 [traced]

Last post by Gila_Crisis « 22 Aug 2023, 14:55
Replies: 125
by J0K3RX » 30 May 2015, 13:53
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Rating: 36.9%

Lookie what I found..... :twisted:
125 Replies

83767 Views

View the latest post Re: AMT - Legend Amp Series
Last post Gila_Crisis
22 Aug 2023, 14:55
Stafford Maxon Hizbender 1944T

Last post by andregarcia57 « 17 Aug 2023, 16:57
Replies: 8
by graybench » 30 Oct 2022, 17:11

Rating: 3.2%

Pedal was only released in Japan, and seems like only from 2011-2012.
Name suggests a tonebender, anything but.
Basically a distortion+ with input/output buffers. Standard Maxon JFET switching.

pcbfront.jpg
pcbback.jpg
traces.jpg
schem1.jpg

8 Replies

1532 Views

View the latest post Re: Stafford Maxon Hizbender …
Last post andregarcia57
17 Aug 2023, 16:57
Moonshine / Bootleg

Last post by blaise « 17 Aug 2023, 15:36

by blaise » 17 Aug 2023, 15:36

Hi,

I've built the bootleg / moonshine clone from .
One thing that makes little sense to me is that the volume and blend have very similar effect since the direct signal is not affected by the volume pot. This is confirmed by looking at the schematic at .

* Does anybody have access to a moonshine and confirm that this is indeed the case? I somehow recall Josh Scott mentioning that the moonshine schematics online were wrong.
* How would I modify the pedalPCB schematic to move the volume to...

0 Replies

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View the latest post Moonshine / Bootleg
Last post blaise
17 Aug 2023, 15:36
Boot-Leg Effectors - Jaw Breaker [traced]

Last post by durga21 « 06 Aug 2023, 18:58
Replies: 12
by soulsonic » 10 Apr 2009, 06:54

Rating: 1.3%

I just got this on my bench yesterday... already traced! :D
It's a very nice sounding distortion. Lots of gain and a very use-able.
The numbers on the chip are sanded off, but it has the pinout of a common quad opamp. My guess is that it's a TL074; it has the sound I hear from that series.
Jawbreaker.jpg
JB_inside1.jpg
JB_inside2.jpg
JB_boardtop.jpg
JB_boardtracks.jpg
This is a very good sounding distortion. I wish they were easier to get in the U.S.

12 Replies

7548 Views

View the latest post Re: Boot-Leg Effectors - Jaw …
Last post durga21
06 Aug 2023, 18:58
JHS - Colour Box

Last post by Dr.Detroit « 22 Jul 2023, 18:32
Replies: 6
by DarkHorse » 07 Jul 2020, 18:14

Rating: 1.1%

I searched and didn’t find a thread.

Here are gut shots I found on the web...

6EF2F920-90F8-43BC-AA24-BBCA45979596.jpeg

6 Replies

3107 Views

View the latest post Re: JHS - Colour Box
Last post Dr.Detroit
22 Jul 2023, 18:32
Death by Audio - Echo Master (gut shots)

Last post by Visualdistortion « 14 Jul 2023, 00:23
Replies: 21
by noise-satan » 14 Dec 2019, 16:29
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Hi guys,
I have bought this and I am really curious to better understand how it works.
just dismounted but I don't have the skills to track it down.

I am sure someone will have the knowledge!
Anyhow hopefully someone will just find the gut shots interesting :D

cheers
21 Replies

8459 Views

View the latest post Re: Death by Audio - Echo Ma …
Last post Visualdistortion
14 Jul 2023, 00:23

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