Tefi Vintage Lab is pleased to welcome you to our family. We hope you
enjoy using our new Gegè germanium fuzz. Feel free to get in touch
for any suggestions or clarifications as to how you might best use the
effect. Play music and enjoy using our products!
Gegè - Germanium fuzz
The oldest distortion effect of them all is revisited by TEFI Vintage
Lab in an original concept that merges NOS germanium transistors,
essential for their sonic characteristics, in a new design to get a wide
variety of modern and dynamic fuzzy sounds. From light dynamic
growl to angry uncontrollable distortion.
Despite being one of the simpliest TEFI designs, a year and half was
spent in research and development to get original sonic results, whe-
ther using Single Coil or Humbucker fitted guitars.
We suggest placing Gegè as a first pedal in an effects chain, or after
other True-Bypass equipped pedals only, because its typical sonic
characteristic is linked to direct interaction between the guitar’s pi-
ckup and Gegè’s non-linear amplitude variable low input impedance.
Interposing buffered pedals between a guitar and the Gegè Fuzz will
not damage it in any way, but its original sound will be considerably
altered.
Caution! Do not connect Gegè Fuzz in a common ground multiple output power supply
(daisy chain)!
The Gegè’s internal circuit uses PNP germanium transistors and, unlike to the more commonly
used negative ground pedals, the circuit’s ground is connected to the positive terminal (“posi-
tive ground”). If you connect Gegè to a common negative pole ground multiple output power
supply (daisy chain), the positive ground of Gegè shorts to the negative ground of the power
supply, causing malfunction and possible damage.
You must use a 9V stabilized battery, a stand-alone or a galvanic insulated ground multiple ou-
tput stabilized power supply only.
TEFI Vintage Lab is not responsible for damage or malfunction due to power connection mista-
kes, or by using inappropriate power supply sources that do not respect the specifications and
warning stated above.
GEGÈ Operating Manual
www.tefivintagelab.it
Dimensions
Battery type
Power supply/
Power consumption
Input impedance
Output impedance
Power connection/ground
9Vdc/approx. 35mW
(I-max: 4mA @ 9Vcc )
Average 10 kOhm (depends on
guitar pickup type and frequency)
Average 1 kOhm (depends on
Volume and Tone knob positions)
Negative tip/positive ground
(use separate supply only, do not
connect in a daisy chain!)
Chassis
Max Gain
Weight
Signal switching
110x55x48 mm
+9V (6LF22)
Die-cast aluminum
+58dB
230gr. (without battery)
True bypass
TECHNICAL SPECIFICATIONS
