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Audient Audio Interface iD4 MKII, Class A Console vs Solid State Logic SSL 2 Plus MKII USB Audio

Updated August 2026 — Audient Audio Interface iD4 MKII, Class A Console wins on portability, Solid State Logic SSL 2 Plus MKII USB Audio wins on software bundle and features.

The Audient iD4 MKII offers great value for home recording, while the SSL 2 Plus MKII excels in professional features and audio fidelity.

Why Audient Audio Interface iD4 MKII, Class A Console is better

Price

iD4 MKII is $214.90, cheaper than SSL 2 Plus MKII at $299.99.

Portability

iD4 MKII has a compact design, making it easier to transport.

Ease of Use

iD4 MKII features a simple USB-C connection.

Why Solid State Logic SSL 2 Plus MKII USB Audio is better

Audio Quality

SSL 2 Plus MKII has 32-bit / 192 kHz AD/DA converters.

Connectivity

SSL 2 Plus MKII offers MIDI I/O and four balanced outputs.

Software Bundle

SSL 2 Plus MKII includes the SSL Production Pack software.

Overall score

Audient Audio Interface iD4 MKII, Class A Console
78
Solid State Logic SSL 2 Plus MKII USB Audio
85

Specifications

SpecAudient Audio Interface iD4 MKII, Class A ConsoleSolid State Logic SSL 2 Plus MKII USB Audio
Mic Preamps1 Class A2 Discrete
Outputs2 Headphone4 Balanced
USB TypeUSB-CUSB-C
Sample Rate24-bit / 96 kHz32-bit / 192 kHz
MIDI I/ONoYes

Dimension comparison

Audient Audio Interface iD4 MKII, Class A ConsoleSolid State Logic SSL 2 Plus MKII USB Audio

Overview of the Audient Audio Interface iD4 MKII

The Audient Audio Interface iD4 MKII is priced at $214.90, making it a cost-effective option for those seeking quality audio recording. It features a Class A console microphone preamp, ensuring high-quality sound capture. This unit is designed for home recording and is compatible with Mac, PC, and iOS, providing versatility for various setups.

The iD4 MKII boasts a new high-speed USB-C connector, enhancing ease of use and improving power supply. Its all-metal desktop housing ensures durability, making it suitable for mobile setups. With two headphone outputs and advanced transducer technology from Audient's high-end ASP8024 HE console, this interface is engineered to elevate the home recording experience.

Overview of the Solid State Logic SSL 2 Plus MKII

The Solid State Logic SSL 2 Plus MKII is priced at $299.99, which makes it about 39% more expensive than the Audient iD4 MKII. This interface is geared towards professionals with its dual XLR mic preamps and four balanced outputs. It is designed for producers, podcasters, and live-studio musicians, emphasizing its versatility in various audio settings.

One of the standout features of the SSL 2 Plus MKII is its 32-bit / 192 kHz AD/DA converters, which provide exceptional audio fidelity. It also includes a MIDI I/O on 5-Pin DIN jacks, making it suitable for those who require connectivity for MIDI devices. The interface includes a Legacy 4K analog enhancement feature, further enhancing its audio capabilities.

Build Quality and Design

The build quality of the Audient iD4 MKII is commendable with its all-metal housing, which ensures durability and stability during transport. This makes it an excellent choice for musicians on the go. The compact size of the iD4 MKII allows for easy integration into any workspace without taking up much room.

In contrast, the Solid State Logic SSL 2 Plus MKII, while also well-built, offers a slightly bulkier design due to its additional features, such as the four outputs and MIDI I/O. Despite its larger form factor, the SSL 2 Plus MKII maintains a professional aesthetic that many users may find appealing. Both products are designed with usability in mind, but the iD4 MKII may have the edge for users prioritizing portability.

Connectivity Options

The Audient iD4 MKII features a USB-C connection, ensuring a modern and speedy interface. This is a significant advantage for users looking for hassle-free connectivity with their devices. The interface also includes two headphone outputs, which is helpful for collaborative efforts during recording sessions.

On the other hand, the Solid State Logic SSL 2 Plus MKII offers more extensive connectivity options, including two discrete headphone outputs and four balanced outputs. This makes it ideal for larger setups or when multiple outputs are required, such as when routing to external speakers or additional recording equipment. The MIDI I/O also adds another layer of functionality for musicians who utilize MIDI devices in their workflows.

Audio Performance

When it comes to audio performance, the Audient iD4 MKII excels with its Class A console microphone preamp, which enhances the quality of recordings significantly. The transducer technology inherited from Audient's high-end console lineage contributes to a rich and detailed sound, making it suitable for various audio applications.

The Solid State Logic SSL 2 Plus MKII raises the bar with its 32-bit / 192 kHz AD/DA converters, providing a higher resolution audio output compared to the iD4 MKII. The Legacy 4K analog enhancement feature further enriches the sound, giving users a classic SSL sound quality that is revered in music production. For those prioritizing audio fidelity, the SSL 2 Plus MKII may be the more attractive option.

Software and Extras

The Audient iD4 MKII comes with a USB-C cable and is compatible with Mac, PC, and iOS. This versatility makes it user-friendly across different platforms. However, the product does not explicitly mention any bundled software, which could be a consideration for users looking for a complete package.

In contrast, the Solid State Logic SSL 2 Plus MKII offers a software bundle known as the SSL Production Pack, providing additional value for users. This pack includes various plugins and software that can enhance the recording and mixing process. For those looking for a comprehensive audio interface experience, the SSL 2 Plus MKII’s included software may tip the scales in its favor.

Price Comparison

The Audient iD4 MKII is priced at $214.90, while the Solid State Logic SSL 2 Plus MKII is available for $299.99. This means that the iD4 MKII is about 17% cheaper than its competitor. For budget-conscious buyers, the lower price point of the iD4 MKII may be a significant factor. However, it’s essential to consider the features and capabilities that come with each interface when evaluating overall value.

If audio fidelity and professional features are paramount, the SSL 2 Plus MKII might justify its higher price for serious musicians and producers. Still, for those who need effective performance without breaking the bank, the Audient iD4 MKII presents a compelling option.

Which should you buy?

Choosing between the Audient Audio Interface iD4 MKII and the Solid State Logic SSL 2 Plus MKII ultimately depends on your specific needs and budget. If you prioritize portability, ease of use, and a lower price, the iD4 MKII is an excellent choice that delivers quality sound for home recording. However, if you are a professional seeking top-tier audio performance, extensive connectivity options, and bundled software, the SSL 2 Plus MKII, despite its higher price, may be the better investment for your audio production needs.