The Kasleder King Of Stone is an analog booster and fuzz pedal from Hungarian maker Kasleder, built around old germanium transistor circuits. Its signal chain is a Rangemaster-style boost feeding a Fuzz Face, and the maker says the two combined "basically can give you a Tonebender Mk2." That puts three of the most coveted legendary germanium sounds in the same pedal, with lots of tweaking options for players who want years of germanium tone history in one box1.
What it does
The King Of Stone covers three germanium fuzz circuits in one enclosure. The Rangemaster is a boost stage, the Fuzz Face is a two-transistor fuzz, and the Tonebender Mk2 is the sound the two make together, so the pedal can act as a boost, a fuzz, or both at once depending on how it is set1.
The transistors are the heart of it. Kasleder uses NOS germanium transistors, parts that have not been made anymore for decades, hand selected for the pedal. Because those parts are finite, the King Of Stone was planned as a limited run of 100 units1.
"Three of the most coveted legendary Germanium sounds in the same pedal."
Power and practical notes
The pedal runs on 9V DC, center negative, and draws 15mA, so it fits a standard pedalboard supply1.
As a planned limited run of 100 units, the King Of Stone may not be in current production. Kasleder also makes other germanium pedals, including the Kasleder Pipergate and the Kasleder Albstros, which may be easier to find.
Videos
Kasleder Fx
Kasleder Fx
Kasleder Fx
Sources (1)
- King Of Stone by Kasleder, RockBoard PedalPedia, 2026





