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As Josh describes the V1 situation:In 2019, Josh left a John Mayer rehearsal in Los Angeles with two extremely rare Dumble units in his backpack to reverse engineer. The first was the A Box Later, a device Howard Dumble built sometime in the 1980s as a buffer preamp boost with a built-in effects loop. John has used it in several situations over the years. We cloned it, named it the Box It Later, and that pedal has lived on versions of Mayer's pedalboards since 2021.The second unit was the Dumble BBC-1, a far more obscure preamp boost. We cloned that one too and made John a private copy called the Basic Boost. At the time Josh assumed he was simply cloning a JFET booster that Howard threw together. He didn't know that years later he would discover that Dumble's BBC-1 was itself a near-part-for-part clone of a Barcus Berry acoustic preamp from the 1970s. The legendary Dumble FET sound — the one inside $200,000 to $400,000 amplifiers — is a clone of a piezo preamp. The NOTADÜMBLË V1 was always supposed to use the Box It Later circuit as its clean channel. The one John actually uses. Two weeks after launch, while prepping a Short Circuit episode about modding the kit, we discovered we had used the BBC-1 instead. The two units look similar. They sound similar. They were both built by Howard, both clean boosts, both reverse engineered for John in 2019. Cliff Smith, our head of R&D at the time, did most of that reverse engineering. His notebooks were the documentation. Cliff passed away a few months after we shipped John's replicas, and when the NOTADÜMBLË kit was greenlit years later, the wrong schematic was the one that got pulled. It slipped through the cracks. The NOTADÜMBLË V1 is a DIY pedal kit from JHS Pedals that puts a half-million dollars of tone at your feet. With the flip of a slider switch, you can go between two highly sought after sounds that are as magical and rare as it gets. In the Drive setting–slider up–you get the dirty and distorted violin-like sounds you know from guitarists like Santana, Joe Bonamassa, and Eric Johnson. In the Clean position–slider down–you get a powerful preamp buffer pulled directly from John Mayer's rare and never before replicated device, the Dumble BBC-1. With easy to understand instructions – no soldering required – this kit is for anyone who wants a particularly fabled amp-overdrive and the experience of easily building their own pedal. Go ahead - save yourself a few hundred thousand dollars and experience the magic for yourself!The pedal was only used in a studio, a non-smoking environment.