[0.15″ pitch Vero] D*A*M Fuzz Sound

I said I would not post here any currently in production units made by Mr.Main, but I did it already on freestompboxes.org

I’m sure I won’t hurt Dave’s business by doing this even if I would

So here it is, four Fuzz Sound variants.

– standard MK3/MK4 version with full off-board wiring

– custom Black On Black limited edition project. It is different part-wise to the common production model

– Grease and Smoke part of The Mother Fucker done as an independent units – custom DAM project based on Fuzz Sound with unusual part values

Here’s few classic MK3 type of projects done on DAM part layout (never issued as a DAM products):

Tone Bender MKIII – Early Spec

Tone Bender MKIV – Later Spec

Tone Bender MKIV – “Batman Logo”

Different layout for them all (and more) can be also found on my Tone Bender page under MK3 section. Also – DAM The Mother Fucker can be found on here

UPDATE 10/06/2012: All projects updated, error in wiring and missing trace-cut fixed


Due to D*A*M counterfeit pedals that recently appeared on the marked all D*A*M straight layouts will be removed from turretboard.org and will be replaced soon with our own works and interpretations.

UPDATE 25/06/2012:

Here’s universal layout for MKIII/MKIV type tone benders on 20×8 .15″ stripboard with listed part values for most common versions:

Get the pdf project file.

Get the png project file.

[0.15″ pitch Vero] D*A*M – Mother Fucker



…also know as DAM – The MOTHER FUCKER

I’m not saying it’s 100% accuracy, but it’s very close

It’s with full off-board wiring (revised 10/06/2012 trace-cut error fixed) as used by DAM. I’m not sure if it’s right, I could fuck up something on the way. I’m not going to verify this, as I prefer to roll it as an two independent units. For those with similar idea, here’s an project page with Fuzz Sound, also contains The Mother Fucker two circuits as a separate effects.


I wasn’t sure of small caps values, 220pF between collector and base of Q1 is what standard MK3 Tone Bender had, and this is my friend MK3 variant after all. FSB member beedotman said that on the right side circuit it may be 470pF as in DAM Grease Box is, but it’s hard to be verified, as is only 5 Mother Fuckers was made. Q3 collector 1nF/10nF (caps looks differently on left and on the right side of this unit) is also big crux. I’ve seen 10nF in other DAM MK3 variants (Fuzz Sound). Good old MK3 bender have 2200pF there, but it’s often used up to 15nF in new production MK3 clones like in well know Soul-Bender.

Do some experiments, it won’t explode, AFAIK it only shifts Tone knob functionality.


Due to D*A*M counterfeit pedals that recently appeared on the marked all D*A*M straight layouts will be removed from turretboard.org and will be replaced soon with our own works and interpretations.

JMI era VOX AC30/6 – circa 1964 replica layout

Before we start!

Bear in mind I’m a passionate only, and I only get started in tube world. It means – I can’t guarantee proper functioning of my amp layouts. You must remember that high voltage stored in – even switched off tube amp can kill!!! Either way, my draw can be good start for your own research, and I hope it will. All my amp layouts are shown here as my private educational journey and historical research, and can’t be used by any as a DIY projects.

Enough blabla-ing… Now the fun stuff.

I was always loving pushed to the limits VOX AC30 tone, and hate the fact that there is no replica layout on the interweb, so I did one. Ow course I’ve fuck it up big time as a newbie… Happily, there was a very kind British Gent, member of my beloved freestompboxes.org who had one of those and was able and happy to help. Richard (is his name) took a lot of his private time to spell me every small detail to complete this documentation, including original grounding scheme. Richard is THE MAN!

Project Revision 6 (09 November 2012):

So I decided to redraw it again. Current layout have the part numbers fixed – now they match factory schematic. Power amp section is now fixed (it wasn’t bad, all connections was right, as per schematic, but the valves was in wrong order, now it’s exact as in vintage units. Valve chart is fixed to, it was really messy before, now the valve layout/numbering matches the real thing. Few other details was also pimped, mainly cosmetic crap…

Project Revision 7 (18 Oct 2013)

Fixed B+ supply to Vib/Trem channel, connection between R39 and R60 was missing. Apart of that – layout is verified. Thanks to Matt (Masco) for locating the problem, and to Charles for project verification

Here’s two layouts in PDF format:

– JMI Era VOX AC30/6 Normal REV7

– JMI Era VOX AC30/6 Bass REV7

Treble Version, redrawed schematic and more text to be fallow

UPTATE: I would like to bring to your kind attention that the AC30 Chassis and faceplates are available at www.valvepower.co.uk – UK Based Retailer. Email Steve for pricing and availability