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Reverb
5.0 (2)
$499.00 New
$380.01 Used
Thomann
4.7 (11)
$491.00 $485.00 $6.00 · All time low

Average Price: $455

High-end/Boutique

$149

$350+

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Price History

Based on price data from 1 merchant for "Expert Sleepers ES-8". Prices shown reflect NEW condition. Tracking began Apr 7, 2026.

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Description

The Expert Sleepers ES-8 is a versatile Eurorack module that bridges the gap between your modular synthesizer setup and your computer, opening up a world of creative possibilities. Designed to be an integral part of your music production workflow, this USB 2.0 audio interface allows seamless integration with a range of computer-based CV generation software, including Max/MSP, Reaktor, and Bitwig Studio. Whether you’re a seasoned modular enthusiast or just starting your journey, the ES-8’s class-compliant design ensures hassle-free operation across macOS, iOS, and Windows platforms.

With its DC-coupled inputs and outputs, the ES-8 handles both Control Voltage (CV) and audio, making it perfect for those who want to explore the boundaries of sound design. The module offers 4x 3.5 mm mini jack line inputs and 8x 3.5 mm mini jack line outputs, providing ample connectivity for even the most complex setups. Additionally, the inclusion of ADAT input and output allows for expanding your system further, making it a future-proof choice for any serious musician or producer.

What sets the ES-8 apart is its ability to function without the need for additional drivers on macOS and iOS, ensuring that you spend more time creating and less time troubleshooting. Windows users are not left behind, with drivers available for Windows 7, 8, and 10. Compact and efficient in its power requirements, the ES-8 is the perfect addition to any Eurorack setup aiming for enhanced digital interaction.

Key Features:

  • USB 2.0 Audio Interface
  • Sample support rates: 44.1 / 48 / 88.2 / 96 kHz at 24-bit
  • DC-coupled inputs and outputs for CVs and audio
  • Compatible with Max/MSP, Reaktor, Bitwig Studio, etc.
  • 4x 3.5 mm Mini jack line input
  • 8x 3.5 mm Mini jack line output
  • ADAT input and output
  • Class-compliant for macOS and iOS
  • Windows drivers for Windows 7, 8, and 10
  • Power requirement: 198 mA at +12 V, 52 mA at -12 V (at 96 kHz)

Product specs

Available since September 2018
Width 8 TE / HP

FAQs

What is the Expert Sleepers ES-8 used for in a modular synthesizer setup?

The Expert Sleepers ES-8 functions as a USB audio interface with DC-coupled inputs and outputs, allowing it to interface with computer-based CV generation software and audio processing apps, making it ideal for integrating modular synths with digital audio workstations.

How many inputs and outputs does the Expert Sleepers ES-8 have?

The Expert Sleepers ES-8 features four DC-coupled inputs and eight DC-coupled outputs, providing flexibility for both audio and control voltage signals in your modular setup.

Is the Expert Sleepers ES-8 compatible with all DAWs?

The Expert Sleepers ES-8 is a class-compliant USB 2.0 audio interface, making it compatible with most DAWs that support USB audio interfaces, including popular options like Ableton Live, Logic Pro, and more.

Can the Expert Sleepers ES-8 be used with iOS devices?

Yes, the Expert Sleepers ES-8 is compatible with iOS devices, allowing you to use it with various audio and CV processing apps, enhancing your modular synthesizer's capabilities.

What makes the Expert Sleepers ES-8 unique compared to other modular interfaces?

The unique feature of the Expert Sleepers ES-8 is its ability to handle both audio and control voltage signals through its DC-coupled inputs and outputs, providing seamless integration between modular synths and computer-based systems.

loopop

loopop

Hybrid modular - The one must-have module: bridging Eurorack and VCV Rack, Softube (ES-8 and MOTU)

Video thumbnail for Hybrid modular - The one must-have module: bridging Eurorack and VCV Rack, Softube (ES-8 and MOTU) by loopop

Hybrid modular - The one must-have module: bridging Eurorack and VCV Rack, Softube (ES-8 and MOTU)

loopop

loopop

Video thumbnail for Expert Sleepers ES-8 - Introduction by Expert Sleepers

Expert Sleepers ES-8 - Introduction

Expert Sleepers

Expert Sleepers

Video thumbnail for ES-8 - EXPERT SLEEPERS (ENGLISH VERSION) by COLOR MY SOUND

ES-8 - EXPERT SLEEPERS (ENGLISH VERSION)

COLOR MY SOUND

COLOR MY SOUND

Video thumbnail for Expert Sleepers ES-8 * First Test by martin goldmann music

Expert Sleepers ES-8 * First Test

martin goldmann music

martin goldmann music

Reviews

PROS

  • Seamlessly bridges DAW and modular synth environments

  • High resolution unmatched by competitors

  • Compact size saves space compared to ES-9

  • Functions well under Linux with low latency

  • Dual functionality as an audio and CV interface

  • Enables CV generation with software like Bitwig or Supercollider

  • Illuminated jacks indicate signal levels visually

  • Integrates effortlessly with ADAT for expanded connectivity

CONS

  • Occasional audio interface dropouts

  • Illumination may cause slight visual confusion between jacks

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Expert Sleepers ES-8.

Features and functionality

  • The ES-8 supports ADAT but not S/PDIF, making it crucial to ensure compatibility with your existing audio interface's inputs.

    Source
  • The OPTX provides 8 inputs and outputs over ADAT in an 8HP footprint, suitable for tracking four stereo or eight mono voices.

    Source
  • The ES-8 works seamlessly with VCV Rack and can function as a virtual mixer, allowing control over DC voltage and oscillators through a command line interface.

    Source

Software and compatibility

  • On Windows, using multiple interfaces like the ES-8 can be complicated due to ASIO limitations, whereas Mac users can easily create an aggregate device.

    Source
  • ES-9 lacks ADAT support, using TOSlink for 1 in/1 out SPDIF, potentially limiting integration with certain setups.

    Source
  • It's confirmed that the ES-8 is immediately recognized by PYO, a Python sound manipulation library, facilitating advanced sound control from the command line.

    Source

Use cases and applications

  • The ES-8 can extend I/O on interfaces like the Scarlett 18i20 via ADAT, using inputs 11-14 and outputs 11-18 when properly configured.

    Source
  • Owners successfully use the ES-8 with the Doepfer external input module to record instruments like bass and violin, suggesting the need for a preamp for non-Eurorack gear.

    Source

Comparisons

  • The ES-3 and ES-6 combo is often preferred for those with ADAT, as some users find it easier to integrate than the ES-8.

    Source
  • Boredbrain OPTX is favored over ES-8 for its compact size and versatility, despite its DC-coupled output limitation.

    Source

User experience

  • Some users have reported difficulty finding documentation on mixing older and newer ES models, though it is possible with the ES-3 and ES-6.

    Source

Other

  • OPTX's high-pass filter enhances sound quality, but affects slow-moving voltages, making it less ideal for precise CV tasks.

    Source

Critic Reviews

Expert Sleepers ES-8

soundonsound.com

The Expert Sleepers ES-8 is a standout Eurorack interface for bridging modular synths with digital audio workstations. It excels in versatility, offering seamless audio, CV, and timing signal integration through USB, with ample expansion options. The review is highly positive about its capabilities in simplifying complex setups and saving on additional hardware costs. However, the lack of PC support and reliance on third-party software for full functionality might deter some users. Nonetheless, it's an investment that opens up creative possibilities, making it a worthy tool for modular enthusiasts.

positive

Article: Review: Expert Sleepers ES-8 Interface | Cycling '74

cycling74.com

The Expert Sleepers ES-8 is a must-have for Max + Modular enthusiasts, offering seamless integration between your computer and modular system. Its DC-coupled inputs and outputs provide excellent audio and CV routing, making it a potent plug-and-play solution. The compact 8HP unit fits snugly into any Eurorack setup and offers visual feedback with its illuminated jacks, aiding in patch debugging. However, the absence of Windows drivers limits its accessibility for non-Mac users, and some users have faced digital noise issues, potentially tied to USB cables or computer specifications. Despite minor drawbacks, the ES-8 is a standout interface that opens up creative possibilities, especially for Mac users.

positive

Expert Sleepers ES-8 review | MusicRadar

musicradar.com

The Expert Sleepers ES-8 is a standout for modular synth enthusiasts, offering seamless integration with OSX and iOS without the hassle of drivers. Its class-compliant nature and Eurorack format make it a great choice for those interfacing analog synths with DAWs. The ES-8 boasts 12-in, 16-out capabilities with a robust CV range, expandable through additional modules. However, it lacks Windows support and presents some connectivity challenges. Despite these drawbacks, its targeted functionality and expansion potential make it a smart buy for serious modular users.

positive

4.5 out of 5

Based on 0 Reviews and 2 Ratings

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Artist usage

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See how Andrew Huang uses Expert Sleepers ES-8

Andrew Huang

Singer, Guitarist

First Of October

...
Verified via YouTube

First visible in this video at 5:16.

Album Usage

The Expert Sleepers ES-8 has been featured on the following albums:

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Used With

Based on how musicians on Equipboard use Expert Sleepers ES-8, it is most commonly used with the following gear.

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Community setups

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