The FETTO Jr. 70 is based on an early FETTO design from 2006 (FETTO 11.1) and delivers a distinct ’70s-style overdrive – warm, harmonically rich, and smooth. It is designed to enhance high-quality valve amps while preserving clarity, dynamics, and note definition.
When paired with Himmelstrutz amplifiers such as the King Cobra, GOAT AC30s, Gnome, or Space Gnome, it integrates seamlessly – enhancing response and feel rather than masking it.
The result is a responsive, expressive overdrive that follows your playing with precision.
Note: For similar tones with extended control and integrated Class A boost, see FETTO Nord 70+.
Born in 2004 with FETTO 9.0. Refined in FETTO Nord 70.
FETTO Jr. 70 keeps the core – the feel, the bite, the harmonic push – but strips away the extras. From edge-of-breakup to full singing sustain. Touch sensitive. Amp-like. 70’s in the fingers.
Discrete Class A (PACO) buffer onboard – switchable between True Bypass and Buffer mode. Small box. Serious attitude.
Ed, Mick & RAM Jam – let's go…
Early Development Step
Layout & Controls
Input / Output
Input
Input impedance: approx. 1 MΩ
Output
Output impedance: approx. 10 kΩ
Push Switch
GIMME
Mechanical switching for the OVERDRIVE circuit. The slide switch below the output jack selects either True Bypass or the Discrete JFET Class-A buffer.
LED Indicator
Status LED
LED turns ON/OFF depending on switch state. LED colour is the colour of the day.
Power
DC Input
9–18 V DC, very low current draw (no internal battery). Optional adapter: 9–18 V DC, centre-negative (BOSS-style, regulated).
Potentiometers
Drive
Classic Himmelstrutz amp-like overdrive; from light breakup to heavier textures (never Metal).
Tone
Passive high-frequency control.
Volume
Output level – as loud as you'll ever need.
Internals *
Internal configuration is used for fine-tuning and voicing, and may involve switches, jumpers and/or trimmers.
* Details may vary depending on version and serial number.
Dimensions & Weight
Size
93 × 38.5 × 47 mm (L × W × H)
Weight
Approx. 160 g (0.35 lbs)
Colour / Finish
May vary depending on season and available parts. Since late 2022: White with grey print.
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