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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  • Snarling Dogs – Black Dog

    Snarling Dogs – Black Dog

    Did I mention that I love CMOS overdrives?This beauty came in a long time ago,  This Snarling Dogs Black Dog was build in the USA by Charlie Stringer. It is an EHX Hot Tubes…

  • Monarch – MTO-22 Tube Driver

    Monarch – MTO-22 Tube Driver

    CMOS overdrive appreciation post number three: the Monarch MTO-22 Tubedriver. This beauty was sold under different names and brands as it is also known as the Aria ATO-1 Tube Overdrive, the Ken Multi MTO-7…

  • EHX – Hot Tubes CMOS overdrive – Nano

    EHX – Hot Tubes CMOS overdrive – Nano

    After my former post people asked me about the Nano version of the EHX Hot Tubes CMOS Overdrive pedal. Prior to this I already published the schematic at Freestompboxes.org.   This pedal is a…

  • EHX – Hot Tubes CMOS overdrive

    EHX – Hot Tubes CMOS overdrive

    Recently this pedal came to my door. I’ve always been a big fan of the EHX Hot Tubes pedal and CMOS overdrive pedals, but this little unit just sounds even better. The EHX Hot…

  • Kitty Hawk – The Kid; 18W 2x EL84 amp with a problem

    Kitty Hawk – The Kid; 18W 2x EL84 amp with a problem

    This great amp was waiting for some TLC! This is a Roy / Kitty Hawk ‘The Kid’ amp. A 18W 2x EL84 amplifier with a dedicated clean channel, a dedicated overdrive channel (called ‘Lead’)…

  • Klemt Echolette – BS40

    Klemt Echolette – BS40

    And then this beauty came in! This Klemt Echolette BS40 just looks amazing!   Klemt Echolette Klemt (as made by Arthur Klemt) starts his own business in the 30’s in Olching (near Munich), Germany,…

  • The HENK; an unknown pedal

    The HENK; an unknown pedal

    I LOVE unknown pedals! I love to trace them, to find out where they are based upon and why they sound like they do. And to find hidden gimmicks.  This pedal is called HENK…

  • Kitty Hawk – Junior Pro tube amp; 1985 Dumble or Mesa

    Kitty Hawk – Junior Pro tube amp; 1985 Dumble or Mesa

    Kitty Hawk was the company the Roy brothers started after they brought out amps under their own name. Their former work were mere copies of Vox models. Then they established themselves as the go-to…

  • Sescom ADB-2 ‘hybrid’ DI box

    Sescom ADB-2 ‘hybrid’ DI box

    I LOVE weird looking things. And when this pretty, beat up unknown DI box came online, and it was basically free, I wanted to check it out!   DI boxesThe box is a Sescom…