Expert Sleepers ES-8 USB Eurorack Audio Interface Module

Expert Sleepers Es-8 is a USB Audio Interface in Eurorack format that supports iOS and MacOS devices.

The ES-8 is 12-in 16-out interface, with 4 audio mini-jack inputs and 8 outputs on its front panel. You can expand the number of inputs and outputs using an ADAT audio interface and also Expert Sleepers ES-3 and ES-5 modules.


  • USB socket: Type B
  • Driver suport: class-compliant USB 2.0 (no Windows support yet)
  • Channel count: 12 in, 16 out
  • Supported sample rates: 44.1kHz, 48kHz, 88.2kHz, 96kHz
  • Output connections: 8x 3.5mm jacks, DC-coupled
  • Maximum output voltage: approximately ±10V DC
  • Analogue inputs: 4x 3.5mm jacks, DC-coupled
  • Input voltage range: approximately ±10V
  • Digital I/O: 1x ADAT input, 1x ADAT output
  • Expansion headers: 1 for ES-5, 1 for ES-6

Pricing and Availability

The Expert Sleepers ES-8 will be available starting from October 1st, 2016 for US $550.

15 thoughts on “Expert Sleepers ES-8 USB Eurorack Audio Interface Module

    1. Even cheaper: get an 828mkII, with even more i/o … then add an Expert Sleepers ES-3 for 8 audio/cv outputs, and you’ve still spent less money.

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  1. I wonder if this module could be used to sync the teenage engineering op-1 to a modular set up instead of using the oplab?

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  2. Are you referring to Firewire versions? Because the USB ones are same price as this. Less I/o for sure. The ES3 is around 300.

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  3. I’d just love to see a Windows solution so I can start playing between Reaktor and my modular gear. Please Expert Sleepers release a Windows version of the ES-8

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  4. Remember that no MOTU has DC coupled inputs, nor supports the full Eurorack +/-10V, nor as far as I know works with an iPad.

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    1. Yes they are DC coupled outputs.
      MOTU are one of the very few which have, as well a Native Instruments – Komplete Audio.

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      1. Yes, MOTU have DC coupled outputs. I said DC coupled inputs. No audio interface that I know of has DC coupled inputs, other than the ES-8.

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  5. Looks tempting to me, pretty comprehensive way to control and record a eurorack system without a stack of adapters and extra input/output modules.

    Once windows deivers show up ill give it another look.

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  6. Been piping my modular’s output through one or two lines, simply due to lack of inputs on my audio Interface. Makes it a pain to try to edit out mistakes after the fact, but it also prevents me from becoming a control freak and endlessly tweaking the mix.

    Honestly, I’m not sure if a product like this would be a good thing or a bad thing for my workflow, but I’m glad to have the option. Of course, for that price, I could buy a Focusrite 18i20, which would perhaps be a more versatile option for my studio as a whole.

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