[0.1″ pitch stripboard] D*A*M – 1966 Italian Tone Bender


Mine first post here!

First of all – Really Big Thanks to Sinner for inviting me here on turretboard.org! It’s really a great honor for me.

So… Here’s layout for last version (from 2010 I think) of sadly discontinued D*A*M 1966.

What it is? Vox Tone Bender replica!
In nutshell Vox Tone Bender share almost the same circuit as Fuzz Face, D.A. Main additionaly has introduced few tweeks which allows to achive different sonic possibilities.

Main change – added switch between ’66 and Super Bee mode. ’66 gives You classic Vox Tone Bender vintage vibes – very raspy and angry tones. Super Bee mode adds more bottom end and volume.
In this version Super Bee mode works little different than in previous 1966. In 2010 version – switch changes resistance of Level pot by adding in parallel 47K resistor, in previous version (will post layout in following days…) switch is changing output capacitor.

Additionaly in 2010 version bias trimpot was moved and now it allow to bias Q1 collector and Q2 base at the same time – according to D.A. Main “It does that clean up thing betterer and is more temperature stable“.

OK… at the moment it’s all. Will update this project page soon for sure!

And one more thing… If You ever will have possibility to get D*A*M pedal – I highly recommend those beautiful dirt boxes. Work of David and Linzi are always top notch!


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.

Rock On!

[0.1″ pitch stripboard] – D*A*M Professional MKII


Here it is – Discontinued D*A*M Professional MKII.

It’s almost stock Tone Bender MKII variant, but with Q2 bias adjustment control and Q1 base to ground resistor changed from 100k to 10k.

This is what you could get from D*A*M before Mr.Main join the forces with Macaris to create Tone Bender reissue line under Sola Sound brand

For more Tone Bender variants, including Sola Sound classics, Sola/D*A*M reissues and more go here

To get Discontinued


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.

[0.15″ pitch vero] Colorsound Fuzz Box

Another instant classic,

Colorsound Fuzz Box, also known as a One Knob Fuzz

Designed by famous Dick Denney in 60’s firstly hit the floor in 1990 as one of the pedals in Colorsound line

Simple and effective build, recently reissued by D*A*M/Macaris combo.

In recent reissue D.Main is using BC109C NPN silicon transistor (BC109 in DAM reissue) in first stage (Q1), and higher gain selected BC108C for Q2.

I also should note the ins and outs. Originally you have them swapped around, my layout shows typical In/Out arrangement to prevent confusion

PROJECT REVISED – missing trace cut fixed, as well as draw with correct 0,15″ pitch vero in mind

Get the project file here [.pdf]

[0.1″ pitch stripboard] Jen (Gretsch Playboy) – Harmon Booster

I don’t know what it is, I never build it before, quite recently I heard about it first time. It’s called Harmon Booster, but AFAIK it’s more like overdrive.

Guys on interwebz says it’s cross between Tube Screamer with Big Muff voicing. Cool description! It may be fun.

The real one was build on PNP silicon BC318C. I did my layout with offboard wiring for negative ground powering instead.

Up to you how you’ll wire it up.

Also LED limiting resistor was added on board, and 3PDT switch wiring is showed

Report back how you like it, I miss your emails 🙂

Big thumbs up and credits to SonicIV  for schematic

Get your project file (PDF) here

[0.1″ pitch Perf] Dunlop JBF-3 Joe Bonamassa Fuzz Face

Another Dunlop Fuzz Face variant.

As my previous layout, this perfboard is based on Electric Warrior’s work with just few components added to match it to JBF-3 spec.

What’s the Fuzz is All About? Firstly, it has one more component to (AFAIK) prevent squealing at higher Fuzz settings.

Secondly, it’s PNP germanium circuit. Old stock Russian transistors ware used.

JBF-3 was short lived limited to 300 units only. It’s gone by now, so here’s your chance to build one.

I did another layout with external bipolar power supply, but I wasn’t sure connections, so I decide to let you see it as is – bare bone.

Get your PDF project file here


LAYOUT CONTAINS ERRORS – corrected version to view here http://turretboard.knucklehead.dk/?p=1642

[0.1″ pitch Perf] Dunlop JH-F1 Jimi Hendrix Fuzz Face

Last Dunlop Fuzz Face Hendrix reissue. This one was designed by Jeorge Tripps, well know man behind Way Huge effect. Few cool mods ware applied, mainly to stabilize and prevent RF pick-up.

Here’s the lil layout I did (PDF). I was inspired by Electric Warrior’s perfboard Fuzz Face layout, he done years ago.

I just simply added few components as per JH-F1 spec.

Still a lot of vintage charm and vibe.

Q2 collector bias in this model is set quite high, way higher than standard 4.5v.

I’m not sure about Q1 collector bias, it seems to be around 1.4v, so not far away from typical FF Q1 bias point.

In JH-F1 those bias points are preset at the factory with SMD trimmers on trace side under the board. Use a pot to set it, measure the bias with your DMM and pick-up closest value resistor from your stash, if you want to go anal, measure your resistors to pick up the exact one.

47pF capacitor isn’t confirmed. In JF-F1 it’s unmarked SMD type, should be between 47pF and 150pF.

[Stripboard/Vero] D*A*M Head Buzz


Another out of production D*A*M custom project. Head Buzz is basically standard Fuzz Face – no mods.

Done for Japanese market only.

Total of four versions was issued AFAIK:

PNP germanium – all with holly NKT275’s and NPN silicon on BC108, and some on BC183L – similar to MK1.5 Bender appearance, but build on 0.1″ pitch stripboard with expanded space to accommodate 1/2W resistors and full sized axial capacitors. Basically standard Fuzz Face spec, but linear taper Volume pot and 6k8 Q2 bias resistor in silicon version. These two had no shielded wire off-board wiring.

Please note floating wire coming from DPDT switch – track it to under the switch, or find other grounding point to enclosure. Otherwise expect huge amount of squealing and RF pick up

The other two versions are all silicon. This time dead-on MK1.5 layout presence, made with 0.15″ pitch vero, and shielded wire off-board wiring was used this time.

– First one has also stock Fuzz Face specification, we see BC108, BC183L, or BC209 transistors here, depend on issue, linear taper Volume and 8k2 Q2 bias resistor, no changes after that

– The other one 0.15″ vero version is odd. It was build to ordered for D*A*M’s Japanese dealer to mimic  “drift and sag” on one of their favorite vintage units. Electrolytic capacitors  are mystery to me, I can’t see part values, but resistors are clearly visible. If I get more info, I’ll update this page ones again


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.