The Kasleder Albstros is a preamp fuzz pedal: a single unit that combines a clean-ish boost and tone-shaping stage with a fuzz circuit. RockBoard's PedalPedia describes it as "a blend between a modern JFET preamp and an old-school transistor fuzz," so the idea is to pair the clarity and control of a JFET preamp with the rougher character of a classic transistor fuzz1. If you are new to fuzz, it sits in the wider family of Fuzz Pedals, and the preamp half of the design puts it in territory shared with Preamp Pedals.
What it does
The Albstros covers two jobs at once. The JFET preamp side works like the front end of an amplifier, shaping and pushing your signal, while the transistor fuzz side brings the saturated, old-school fuzz texture. Kasleder's own description frames it as a hybrid: "the Albatross is a blend between a modern JFET preamp and an old-school transistor fuzz"1. For a player, that means one pedal can act as both a tone-shaping preamp and a fuzz, rather than needing a separate boost or preamp in front of a fuzz on the board.
Power and practicalities
The pedal runs on 9V DC with a center negative plug, the standard arrangement for most pedalboard power supplies, and it draws 20mA1. That is a modest draw, so most multi-output supplies can handle it alongside other pedals.
The Albstros is an analog circuit1. Analog fuzzes can behave differently depending on what feeds them, and the preamp stage in this design is part of how Kasleder addresses that, since the JFET preamp sits ahead of the fuzz in the signal path.
Questions
Is the Kasleder Albstros analog or digital?
The Albstros is an analog pedal. Kasleder describes it as a blend between a modern JFET preamp and an old-school transistor fuzz, so the preamp stage and the fuzz stage are both handled by analog circuitry rather than digital modeling.
How is the Kasleder Albstros powered?
It runs on 9V DC with a center negative connection and draws 20mA. A standard 9V pedal power supply or a daisy chain output with enough current headroom will run it.
Sources (1)
- Albstros by Kasleder, RockBoard (rockboard.de PedalPedia), 2026