by Robin Vincent | 4,4 / 5,0 | Approximate reading time: 2 Minutes
Tiptop Audio Buchla Model 266t

Tiptop Audio Buchla Model 266t  ·  Source: Tiptop Audio


If there’s one Buchla model that encapsulates the west coast paradigm, it’s the superbly named Source of Uncertainty – Model 266t. Tiptop Audio is taking preorders on the Eurorack 200 series remake.


Source of Uncertainty

Even if you’re not familiar with Buchla series modular, those three words will have a familiar ring to them. It’s a module of difference which pulls synthesis and sound design out of the hands of engineers and wanders off down the road with a bunch of musicians for a smoke and maybe something mind-expanding. While it may not seem quite so revolutionary now because we’ve feasted on the features ever since, but in 1976 the Model 266t ignited an explosion of randomness and probability that we still feel today.

So, it’s about randomness, right? Yes, mostly. You’ve got fluctuating random voltages, you’ve got quantised random voltages, and you’ve got stored random voltages. You’ve got a three-colour noise generator, Sample & Hold, and an Integrator to round things off. That should be enough moving, morphing voltage values for even the most out-there probability quirk.

Tiptop Audio Buchla Model 266t

Tiptop Audio Buchla Model 266t · Source: Tiptop Audio

Uncertainly familiar

I find it really interesting how the functions in the module have found their way into our racks via other means. All our S&H circuits, our Turing Machines and also probability-based sequencers owe something to the Source of Uncertainty. The layout has certainly changed a bit from the original, but there is no escaping that vibe of mystery and adventure that is awaiting your patch cables.


The Model 266t is making its way to retailers now for a relatively affordable $299. You can check out the manual online.

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Source of Uncertainty Model 266t

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Tiptop Audio Buchla Model 266t

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