Audient Audio Interface iD4 MKII, Class A Console vs Focusrite Scarlett 18i20 4th Gen USB Audio Interface
Updated August 2026 — Audient Audio Interface iD4 MKII, Class A Console wins on portability, Focusrite Scarlett 18i20 4th Gen USB Audio Interface wins on inputs and outputs.
The Audient iD4 MKII is a budget-friendly option for home recording, while the Focusrite Scarlett 18i20 offers extensive features for professional use.
Why Audient Audio Interface iD4 MKII, Class A Console is better
Price
iD4 MKII is significantly cheaper at $214.90
Portability
Compact design makes it easy to transport
Simplicity
Ideal for solo artists and small projects
Why Focusrite Scarlett 18i20 4th Gen USB Audio Interface is better
Input/Output
Scarlett 18i20 has 18 inputs and 20 outputs
Sound Quality
Higher dynamic range with 24-bit, 192kHz converters
Software Bundle
Includes Pro Tools Intro+ and other software
Overall score
Specifications
| Spec | Audient Audio Interface iD4 MKII, Class A Console | Focusrite Scarlett 18i20 4th Gen USB Audio Interface |
|---|---|---|
| Preamps | 1 Class A | 8 Preamps |
| Dynamic Range | N/A | 122dB |
| USB Type | USB-C | USB |
| Software | N/A | Pro Tools Intro+ |
| Price | $214.90 | $749.99 |
Dimension comparison
Overview of the Products
The Audient Audio Interface iD4 MKII is priced at $214.90, making it about 71% cheaper than the Focusrite Scarlett 18i20, which retails for $749.99. This significant price difference reflects the target audience and use cases for each product. While the iD4 MKII is designed for home recording and smaller setups, the Scarlett 18i20 caters to more complex recording needs with its extensive input and output capabilities.
Design and Build Quality
The Audient iD4 MKII features an all-metal desktop housing that ensures both stability and durability, ideal for users who are often on the go. With dimensions of 133x120x40.7 mm and a weight of 740 g, its compact design is suitable for limited workspace. In contrast, the Focusrite Scarlett 18i20 has a more robust design meant for studio environments, housing 18 inputs and 20 outputs within a larger footprint. This design caters to users who require extensive connectivity and a more permanent setup.
Input and Output Capabilities
One of the standout features of the Focusrite Scarlett 18i20 is its comprehensive input and output capabilities. With eight mic preamps and a variety of inputs including Hi-Z, line inputs, and digital options like ADAT and S/PDIF, it allows for versatile connectivity and complex recording scenarios. The Audient iD4 MKII, while having fewer inputs, still offers a high-quality Class A microphone preamp, making it perfect for solo artists or small projects where simplicity is key.
Sound Quality
The sound quality of the Focusrite Scarlett 18i20 is enhanced by its 24-bit, 192kHz converters, which provide a dynamic range of 122dB. This ensures that recordings are both detailed and rich, making it suitable for professional-grade production. The Audient iD4 MKII, while it does not specify converter quality, benefits from the same Class A preamp technology found in Audient’s high-end consoles, delivering excellent sound for home recording without sacrificing quality.
Software and Support
The Focusrite Scarlett 18i20 comes with a comprehensive software bundle that includes Pro Tools Intro+, Ableton Live Lite, and Cubase LE, along with the Hitmaker Expansion, providing a full suite of tools for recording and production. This adds tremendous value for users looking to start their music production journey. The Audient iD4 MKII does not specify included software, which may be a drawback for those who need a complete package for their recording needs.
Use Cases
The Audient iD4 MKII is tailored for home recording, podcasting, and smaller music projects, making it an excellent choice for solo artists or podcasters who need high-quality audio without the complexity of a larger interface. In contrast, the Focusrite Scarlett 18i20 is designed for multitrack recording and larger setups, making it ideal for bands, studios, and professional environments where multiple inputs are necessary for recording sessions.
Price Comparison
At $214.90, the Audient iD4 MKII is a cost-effective solution, being approximately 71% less expensive than the Focusrite Scarlett 18i20, which costs $749.99. This price difference is significant and reflects the target audience for each product. For those on a budget or just starting out, the iD4 MKII offers tremendous value without compromising on quality, while the Scarlett 18i20’s higher price point is justified by its advanced features and capabilities.
Which should you buy?
Choosing between the Audient Audio Interface iD4 MKII and the Focusrite Scarlett 18i20 largely depends on your specific needs. If you are a home recording artist or podcaster wanting a robust yet compact interface at a lower price, the iD4 MKII is an excellent choice. However, if you require extensive input capabilities for professional multitrack recording, the Scarlett 18i20, despite its higher cost, offers the features necessary to meet complex recording demands. Each product excels in its own right, making the decision ultimately personal to your recording needs.

