New module!

We're delighted to announce a new Eurorack module, Otterley.

Otterley is a multi-LFO module, designed to offer extensive modulation possibilities, with a good amount of control and flexibility, while remaining nicely compact.

Four of the outputs are switchable between sine and square LFOs. Their frequencies are jointly set by the Speed and Spread knobs, which control the base speed and the speed difference between the outputs, respectively. Both controls also have CV inputs. These four outputs can also be switched between bipolar (±5V) and unipolar (10V positive or negative), and can be reset to the start of their cycle via the Reset input.

A fifth output offers another, independent, sine LFO with its own speed knob.

The module is 100% analogue.

Otterley is available immediately, stock permitting - see Where To Buy.
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Welcome!

Expert Sleepers make Eurorack modules, and other synth hardware. We also make VST, AudioUnit and AAX plug-ins for macOS and Windows, as well as plug-ins for VCV Rack.

We also run a small music label on Bandcamp, showcasing artists who use our products.

Please browse or search our product catalogue below, or find out What's New.

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"Instruments that sound good inspire better music, and it's a struggle to make music with bad-sounding instruments, irrespective of how talented you might be. Software instruments are no different: although they are usually discussed and sold in terms of their 'features'  what really makes you return to an instrument repeatedly is the much more elusive factor of inspirational sound quality.

"I don't know enough about programming to understand why some software tools fascinate you while others make you want to get another job, but I do know that when I use anything by ES I get excited by what I'm hearing. These tools have the sonic richness of great analogue instruments - with the features of innovative digital ones."

- Brian Eno

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