Auxiliary Oscillator Card for Music Easel

The much-loved Auxiliary Oscillator Card for the Buchla Music Easel makes a welcome return! Easel enthusiasts who remember the original BEMI-Era Aux Expander Card will be delighted to see this redesigned version that maintains the spirit of the original while also adding some nice improvements.

So what does it do? It might seem obvious after a glance at its name, but to spell it out more clearly — the Aux Osc Card adds a crucial additional modulation oscillator to your Music Easel ecosystem. It can operate both as a modulation source but also all the way up to audio rates, which naturally increase the complexity and patchability of your system.

This new design shows Buchla's attention to detail and practical thinking. Since the 208c now features EG CV inputs on its front panel, these have been replaced on the Aux Osc Card with a more useful CV Multiplier. This multiplier includes a dedicated knob for controlling the multiplication amount, allowing for more precise control over modulation depths.

Another clever update replaces the now-redundant Pulser input with a random pulse input. This allows for another element of unpredictability in your patches, opening up for more generative patch ideas.

Compatibility is on point — the Aux Osc Card works seamlessly with all Music Easels and Easel Commands manufactured after 2012, including the Modern, Retro, Easel Command, and Anniversary Edition. This makes it a natural companion for users of these systems who want to expand their creative possibilities without straying from the distinct Buchla workflow and sound. Perhaps most welcome for many users is the significantly lower price point compared to the original BEMI-Era Aux Expander Card. You essentially get more functionality for a lower, more accessible price than the OG card - a rare combination in the world of boutique electronic instruments.

For Easel owners looking to push their instrument further, the Aux Osc Card represents a great evolution of a classic expander, bringing some modern refinements to a design that respects the heritage and unique character of Buchla systems.

Features:

• Additional modulation oscillator that can also function at audio rates
• CV Multiplier with dedicated control knob
• Random pulse input for generative patching
• Compatible with all post-2012 Music Easels and Easel Commands
• Works with Modern, Retro, Easel Command, and Anniversary Editions
• Expands patchability and sonic possibilities of your Easel system