Category Archives: who am I

My Amps : 10 to 25 Watts

I make amplifiers for guitar or harmonica … Small, just like my workbench !
They are available as separate head …
The layout and the equipment are to be composed “custom” according to your project.

Transistor models feature a real power of 10 or 25W on 8 ohms.
They use a 60s germanium technology, which denies the bad reputation of transistors…
It brings especially a natural compression and a progressive transition to overdrive which have little to envy tubes, with a price also compressed!

I also realize high quality tube models, custom 5 to 15W, with vintage or high-end components where it’s worth and audible.

In both cases my aim is to offer amplifiers intended for home use or small concert venues, without technical weakness, and with a sound that will please the instruments.

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My stompboxes : DD size

I have designed some large format stompboxes (approximately 20 x 11 x 3.5cm), either because they have to contain a printed board of significant dimensions, or because they have to bring together several cards.

These configurations are often the result of custom orders by musicians with strong choices … Their requests have led me to design typical equipment, which are often associations of existing circuits.
Everyone can now benefit from these experiences, or imagine their own project!

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My MicroCombos

My MicroCombos are small amps of real power 1W and 3W.
They are designed old-fashioned way, from a technological point of view as well as from a design point of view.

Electronics in through-hole components from the 60s-90s ,
100% germanium class AB power amplification.
Branded, contemporary or NOS loudspeakers.
Reinforced solid wood case (European walnut and plywood) and original Fender canvas.

Their clean sound is mild, and they crunch at low level without sounding harsh, with a roundness that has nothing to regret from tubes.
They are well suited to rehearsals at home, or to small parties!
They were originally designed for the guitar, but I quickly grasped the interest of working just as much for harmonica, taking advantage of the sonic grain of the old transistors…

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Stompboxes, 1590BB size

Guitarpoppa : pédales

My activity is to design and handcraft stompboxes, preamps or small amps.
It feeds on my experience as a musician and technician trained in the 60s.
Some of my pedals perpetuate the tradition, with updated means.
Others have an original design.

They are built in the international 1590BB format, approximately 12 x 9 x 3cm.
This size is no longer fashionable but is justifiable : My pedals use traditional components manually welded and not micro-components assembled by robots. The wider printed tracks and pads are more sturdy, and desolderable, therefore repairable without risk of takeoff… Same for potentiometers…
On an other hand, my circuits are more provided than most of stingy circuits in ordinary productions : active filtering in the supply line, really playable presets, pull down components minimizing switching noises…

Traditional stompboxes

I reproduce the historical circuits in the love of their sound …
And I perfect with all respect what is worth it.

Improvements by Guitar Poppa :

• Technicity : verified and corrected schematics, sorted components, neat powering.
• Functionality : Well balanced impedance, progressive settings, raised output level.
• Musical potential : refined tone and grain, dynamic response to instrumental playing.
• Customization : custom features and settings, duets coupled in a single box…

4 classics

The (S)cream - overdrive de type TS9 amélioré - réglage de textureThe (S)cream

TS9 type Overdrive
with a diversified sonic texture.

Germanium Fuzz ,
of the Fuzz Face.

Germanium Fuzz ,
development of the ToneBender Mk1.

Clean booster,
of the Rangemaster


Original preamps and overdrives

The identity of a pedal lies in its sound color and grain, as well as its dynamics…
…It will combine these parameters in musical quality,
and finally its behavior must “please” the instruments that are connected to it…

3 originals

LowVoltTube by, preamp/overdrive with a NOS low voltage tubeLowVoltTube
with a NOS low voltage
tube inside.

CurvyMama, préampli pour harmonica et guitare. Donne du corps et du grain au sonCurvyMama
with a warm and fleshy tone for harp or guitar.

SweetGerm by, a germanium preamp to make your instrument singSweetGerm
Germanium preamp
to make guitar
or bass sing

Bandeau medium rouge - offre


On this website

See also my “Products” page

Go to the following : “Mods and Customization”

Go and read Terms of Sales (in french)


Go and see Guitar Poppa’s Facebook page

History of Guitar Poppa

Guitar Poppa and his guitars

It’s the story of a teenager from the sixties, nourished by pop music and the english blues boom : nervous and colored sounds, top boosted, or fat and hairy. Like many people at the time, I started tinkering with electronics: dismantling tube radios to recover parts, and trying to transform them into guitar amps…

Sound equipment was very expansive then, and that was a good reason to learn how to build my own. To avoid making my things smoke, I had to learn how to calculate them, and my scientific studies helped me a lot. It was also a good time: the high spot of tubes, and the democratization of the first germanium transistors. All that left me sweet sensations in the ear and some fundamental equations.

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The Guitar Poppa project

Guitar Poppa project

The Guitar Poppa project was born in the 2000s, in a motivating musical actuality: the return of guitars, the rediscovery of vintage gear once again perked up my ears. Nowadays, this agitation has subsided, but I keep enjoying a culture, and the experience of quality gear that is now affordable.

I collected historical diagrams and reactivated my technical courses. I gathered a treasure of components: Retrospective thanks to Philips-Mullard, Thomson, SGS-ATES, Siemens, these manufacturers who made good  and over the long term… Also to the Red Army for its stocks of components on military standards and to their Ebay sellers!
And above all: I built lots of prototypes, tested at length on the workbench and on stage.

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Jack Mono Blues

Jack Mono Blues en Club

Jack Mono Blues is my band…
We play postwar blues standards that took balls !

It was a magical moment, towards 1945-65, when the migrants musicians from the Delta made the urban energy of Chicago definitively their own thing : they invented a rough way of feeling that was still rural, but already colored by the lights of big city. Later, as teenagers, we found out in that music gorgeous echoes of our own metamorphosis, and never recovered…

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