SpanishMoss

This new overdriver is named after the Spanish moss, which flows over Mississippi and Louisiana trees…
Depending on the settings, it will sound mild or dramatical, with a light grit or else with a long growl.
In this aim, SpanishMoss uses a special saturating system…

Overdrive SpanishMoss by Guitar Poppa - Logo

Overdrive SpanishMoss by GuitarPoppa.com - Diodes silicium et transdiodes MOSFET

SpanishMoss overdrive


The Tube Screamer® family is so reference since its release in 1979 that it’s been cloned up and down, and one must say without much initiative …
However, one can imagine overdriven sounds less centered on the midrange, with a less compressed and scratchy grain, and more open dynamics.
I also desired experiment new types of components in the overdrive circuit.

In this state of mind, SpanishMoss features an extension of the possibilities already opened a few years ago in my overdrive The [S]cream …


General features

Techno: Op Amps and feedback network combine two technologies ; silicon diodes and MOSFET transdiodes.
“Texture” original control to mix the effect of these components, with their resulting grit and headroom.
3 presets to get more tonal possibilities.

Power supply

The circuit operates between 7 and 12V.
Internal 9V battery or external power supply. 2.1mm coaxial plug, center negative.
Typical consumption: 8mA.

Internal electronic filtering eliminates common noises coming from the supply.
Hiss from switching power supplies, Hum of poorly filtered transformer power supplies.


(Scream) - Bandeau medium rouge - L15

To order…

1. Choose the Op Amp option.
2. Specify the delivery area.
3. Click <add to the command>.
4. Click <Cart> on the main menu to finalize.

SpanishMoss - Version unique - façade et commandesSpanishMoss
139 €

Classical Drive/Tone/Volume controls.
• 3 tone presets.
• Special Texture control.
• Op Amp to choose when ordering.


The [S]cream





[S]cream - Bandeau medium rouge - L15


More detailed features

In the continuity of tradition..

Old school préamplification :
JRC4558D or MC1558G Op amps from the 70s, ensuring a sustained but not sour grain.
• JRC4558D : The TS9’s Op Amp… Gives a compact and well integrated grain.
• MC1558G : a rustic op amp, if you prefer a more dirty and grumpy texture.

Original 1N914 feedback diodes
They saturate more gently than the contemporary and banal 1N4148s.

Usual settings of any classic overdrive:
Drive, TS9® typeTone , Volume.

The MC1558 Op Amp by  Motorola.


Originalities by Guitar Poppa

3 presets to diversify the sonic contour
Classic : the medium contour of the TS9®, centered on 900Hz, a little less darkened.
Brite : unbridled treble, while retaining attenuated bass below 250Hz.
Deep : 80-5500Hz wideband contour, for a full and more contemporary sound.

Saturating network combining two specific technologies
Silicon diodes: bushy and compressed grain, with the original 1N914 diodes of the TS9®.
MOSFET transdiodes : open headroom and more lasting grain, a bit like tetrode tubes.


Overdrive SpanishMoss by GuitarPoppa.com - Diodes silicium et transdiodes MOSFET
The network of MOSFET diodes and transdiodes responsible for the overdrived grain.


An originality in the little world of overdrives : The “texture” control
It mixes diodes and MOSFETs effects, and modulates the texture at a given drive setting :
— More dense and bushy grain (diodes) or softer and sustained (Mosfets)…
— Compressed dynamics (diodes) or more open headroom* (Mosfets) …
The game consists of discovering the positions of the button for which one can ear something remarkable in the grit, the rendering of the attacks, the sustain…


Overdrive SpanishMoss - commandes de tonalité et de texture

Right : the two “Drive” and “Texture” controls

Headroom :
This is the dynamic range below which the sound remains clear before the overdrive effect. Squeezed with diodes, open with MOSFETS transdiodes …
Its value determines the impression of dynamics: it is space to let your muscles play !
It is also space to receive the natural timbre of the instrument, which, to the ear, seems to be preserved below the grit of overdrive ….



(Scream) - Bandeau medium rouge - L15

To know more

Links and downloads

Product record

Hear samples of SpanishMoss

Components used in overdrive pedals (by Guitar Poppa)

Contact Guitar Poppa

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