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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  • Ampeg V4-BH

    Ampeg V4-BH

    I love Ampeg amps! Their vintage models that were so different compared to the most standard brands but also their modern amps that tend to bring the vintage aesthetics with more output power. The…

  • Echolette – Hercules 520

    Echolette – Hercules 520

    Recently I got this 2x 15 cab when I bought a new amp. Searching the internet didn’t result in any information on this cab or speakers, so this post is pure informative! I’ve already…

  • Ampeg – Gemini II (G15)

    Ampeg – Gemini II (G15)

    Last week I got this beauty in! A vintage Ampeg Gemini II amp, a workhorse in a local studio (Woodstock Recording Studio, Enschede / IG). It is now blowing fuses. Let’s open it up!…

  • Van Amps – Solemate reverb unit

    Van Amps – Solemate reverb unit

    I tried contacting VanAmps before sharing this information but all the emails I send out weren’t answered. I don’t know if the company still exist; their website has been offline since 2025 and the…

  • CPM – The Fabulous Megalonoise Machine

    CPM – The Fabulous Megalonoise Machine

    Sometimes you get some weird stuff in. From the title I couldn’t even fathom what this pedal should be doing. Also internet isn’t finding any. Lets dig in! The circuitThis pedal came in a…

  • Moen – MO-PD Pretty Dolly

    Moen – MO-PD Pretty Dolly

    This pedal came in as it didn’t produce any sounds. Even the bypass signal wasn’t working. So no delay, let’s check! Moen is a Chinese company that produces pedals now for 15 years. Their…

  • Un Kraut – Oct fuzz

    Un Kraut – Oct fuzz

    Another unknown pedal from an unknown builder. I found this video‘s on Youtube from (I think) the original builder. No other findings on the internetIf you are the original builder and want to add…

  • Anders Westenberg – Phaser / Wah / Volume

    Anders Westenberg – Phaser / Wah / Volume

    This pedal got to me in pieces; unknown if it would work properly. It was also delivered with a lot of papers from the designer / builder making sure you’d have all the files…

  • Harley Benton – OD-5 Overdrive

    Harley Benton – OD-5 Overdrive

    I was triggered when this cheap pedal came along. A clean control? Could this be a Voodoo Labs Sparkle Drive clone? Harley Benton is since 1998 the house brand from Thomann, a German store…