Bernard d’Uur’s little lab; doctor is in!

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A blog about vintage amps, pedals and their working. For over 20 years I’ve been dissecting amps, pedals and guitars to see what makes them tick! And I love a good mystery! So dive together with me in the information I can dig up from various places (both digital and analog) to tell you more on the units I work on. My main addictions are Fuzz pedals, Chorus pedals and 50’s amps. And the rarer, the better

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Articles of interest

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  • Davoli Krundaal – Blue Jeans

    Davoli Krundaal – Blue Jeans

    I love old and vintage amps. And this amp is no exception.  Davoli Krundaal is a company that started in 1957 in Parma, Italy. The main designer, Athos Davoli, was an electronic engineer that worked…

  • FBT – 500BR; MUD-amp galore or bass amp to the max!!

    FBT – 500BR; MUD-amp galore or bass amp to the max!!

    Real bass amps in full tube version are sparse. The Fender Bassman (and the Marshall line that came from this), Dynacord BassKing are a few, but most of these amps were taken over by…

  • Nobels – FU-Z fuzz

    Nobels – FU-Z fuzz

    Some fuzz pedals are quite known. Some other fuzz pedals are not. This Nobels fuzz pedal is quite unknown and on the internet not a lot can be found on this pedal. So let’s…

  • Fender – Showman AA763 with 7355 tubes

    Fender – Showman AA763 with 7355 tubes

    I got this beauty in for some TLC. I have worked with older Fender Showman amplifiers but this one was different: different tubes in a Fender amp? The Fender Showman was introduced as the…

  • Black Lion Audio – PG-P type F

    Black Lion Audio – PG-P type F

    Once in a while you learn something new.   Last month I had three encounters with amps that did something weird: All three amps produced weird noises at night but were miraculously cured the next…

  • Unknown pedal – Fuzz? Overdrive? Boost?

    Unknown pedal – Fuzz? Overdrive? Boost?

    Sometimes I get these pedals in that are clearly made by someone in a DIY fashion. No markings, no owner, just someone that liked to tinker with resistors and capacitors. Now this one came…

  • Goodrich – LDR-2 volume pedal

    Goodrich – LDR-2 volume pedal

     I got this pedal in for some TLC. It need to run on a normal guitar effects pedal power supply; let slide it away. Goodrich is a USA based company that is most famous…

  • Emma – DiscumBOBulator V1

    Emma – DiscumBOBulator V1

    I simply love envelope filters.  The way they respond,  just stand out in the mix and deal with dynamics,  I think it’s awesome.  The Emma DiscumBOBulator is one of those favourite envelope filters I…

  • Menatone – Blue collar (version 3 / ’04)

    Menatone – Blue collar (version 3 / ’04)

    I got this 2004 Menatone The Blue Collar in for some repairs. The unit sounds off with a slight misbiased sound that doesn’t respond to any controls.  Menatone started in 1996 with building pedals.…