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Writer's pictureArch Delaro

Eurorack & DAW Synchronization: Expert Sleepers FH-2 vs. Circuit Happy ML:2

Updated: Apr 24

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When it comes to integrating modular synthesizers with external MIDI devices and DAWs, selecting the correct interface module is essential for achieving optimal synchronization, particularly in hybrid systems combining a DAW with Eurorack gear. Two notable options in this field are the Expert Sleepers FH-2 and the Circuit Happy ML:2. In this article, we will explore the significant distinctions between these modules to assist you in making an informed decision tailored to your specific requirements.


Expert Sleepers FH-2 and Circuit Happy ML:2

Eurorack & DAW Synchronization Modules Showdown


Understanding the Expert Sleepers FH-2

The Expert Sleepers FH-2 is an 8HP Eurorack module renowned for its advanced MIDI-to-CV conversion capabilities and comprehensive synchronization features. One of its standout features is the ability to precisely manage latency and synchronization on a per-track basis via the DAW and the FH-2 parameters. This level of control allows users to tailor timing parameters to suit different modules within their setup, ensuring tight integration with DAWs.


The FH-2 supports complex MIDI routing, CV conversions, and clock generation, making it suitable for intricate modular setups that require seamless communication between analog and digital domains. It offers extensive configurability via its user interface and a web-based configuration tool, empowering users to fine-tune settings according to specific performance requirements.


Key Features of the Expert Sleepers FH-2:
  • Precise latency management for each module.

  • Customizable MIDI-to-CV conversion and routing.

  • Advanced clock generation and synchronization capabilities.

  • Flexible configuration options via user interface and web tool.

  • Suitable for complex modular synthesis applications.


Exploring the Circuit Happy ML:2

The Circuit Happy ML:2 is another compact 2HP module designed to facilitate MIDI integration within Eurorack systems. While the ML:2 excels in providing basic MIDI-to-CV conversion and Ableton Link synchronization, it may offer less granularity in latency management compared to the FH-2. The ML:2 is suitable for users looking for a simple solution for MIDI connectivity and tempo synchronization, albeit with limitations.


When signals travel from the DAW through multiple modules and then return to the DAW, even when synchronized to a single clock from the DAW using the ML:2, there will be different latencies. This aspect must be taken into consideration!


Key Features of the Circuit Happy ML:2:
  • Simplified MIDI-to-CV conversion and Ableton Link synchronization.

  • Easy setup and integration with MIDI devices and DAWs.

  • Compact form factor suitable for space-constrained setups.

  • Requires a working WiFi network.


Choosing the Right Module for Your Needs

When deciding between the Expert Sleepers FH-2 and the Circuit Happy ML:2, consider the following factors:


  1. Latency Management: If precise latency control and module-specific synchronization are critical for your workflow, the FH-2's advanced features may be more suitable.

  2. Complexity of Setup: Evaluate the complexity of your modular synthesis setup and the level of customization required. The FH-2 offers extensive configurability, whereas the ML:2 prioritizes simplicity and ease of use.

  3. Integration Requirements: Determine your specific integration needs with MIDI devices, DAWs, and external controllers. Both modules excel in MIDI-to-CV conversion but offer varying degrees of control and flexibility.

  4. Budget and Space Constraints: Consider your budget and available rack space. The ML:2 is more compact and budget-friendly, while the FH-2 offers extensive functionality at a slightly higher price point.


Take it or leave it

I recently had a conversation with a trusted friend who has over 30 years of experience in music production and has invested significant time in achieving perfect synchronization between his DAW and Eurorack system. After recommending the ML:2 to him, he quickly pointed out that the Expert Sleepers FH-2 provides a superior solution for achieving precise synchronization across all components. According to him, the FH-2 allows for individual adjustment of each track's timing, ensuring that the sound returning to the DAW is perfectly synchronized with every element of the modular setup.


In his own words, he emphasized the importance of this capability, noting that not all modules operate at the same speed, and precise adjustments are necessary to avoid latency issues, especially when incorporating effects and VST instruments within a DAW environment.


He expressed skepticism towards videos that promote synchronization solutions without demonstrating thoroughly the actual results within the DAW grid, highlighting the necessity for tools like the FH-2 that bridge the gap between amateur and professional setups.

Ultimately, his experience underscores the critical role that precise synchronization plays in professional music production, particularly when dealing with complex hybrid systems.


In Sum

The choice between the Expert Sleepers FH-2 and the Circuit Happy ML:2 hinges on the complexity of your modular synthesis setup, your requirements for latency management and synchronization, and your budget constraints. The FH-2 is ideal for advanced users seeking granular control over MIDI and CV processing, while the ML:2 offers a streamlined solution for a more basic MIDI integration and tempo synchronization. Evaluate your specific needs and preferences to select the module that best complements your modular synthesis workflow and enhances your creative expression.


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