For the circuit design of the Fzzxkrrrxzt!, we had Johnny and Conny's original vintage pedals shipped to Denmark to be traced and analyzed by my electronics engineering partner. This means, bob hund pedal is not merely built to the schematics floating around the internet, but to the exact parts measurements and oscilloscope analysis of bob hund’s original vintage pedals. In the lab, we are not satisfied until we have designed circuits for exact sound-a-likes and work-a-likes to Johnny and Conny’s pedals.
Interestingly, the circuit of bob hund’s old FZ-1S is not identical to the schematics found online - or even the one printed inside the pedal. So we are building it to the actual, physical specifications of the bob hund pedal.
The FZ-1A proved to be a different kind of challenge. The orignal FZ-1A pedals were made with germanium transistors, and because of the unreliabily of these, and the problems with RoHS compliance (EU environmental regulations), we have recreated the exact sound of the original pedal using modern silicon transistors, with the addition of other parts to precisely emulate the electronic properties of the germaniums (leakiness, internal capacitance etc. etc.), with a great result. In other words, this part of the bob hund pedal will not be part-for-part identical to bob hund’s vintage pedal, but the sound and feel and behavior is identical. It has taking a lot of time in the lab to get it right, but we finally succeeded. What we came up with is probably the best and most detailed analog germanium transistor emulation ever made.
An audio clip of an A/B comparison between the original bob hund Maestro FZ-1A and a breadboard version of the final Fzzxkrrrxzt! circuit will be posted here and at my social media channels soon!
PLEASE NOTE: Prices at the webshop are listed without VAT. For customers in the European Union 25% VAT is added at check-out