MOTU M6 6x4 USB-C Audio Interface with Studio-Quality Sound vs Solid State Logic SSL 2 Plus MKII USB Audio
Updated August 2026 — MOTU M6 6x4 USB-C Audio Interface with Studio-Quality Sound wins on latency and audio quality, Solid State Logic SSL 2 Plus MKII USB Audio wins on price and user-friendlines.
The MOTU M6 offers superior audio quality and advanced features, making it the better choice for professionals. However, the SSL 2 Plus MKII is a solid, budget-friendly option.
Why MOTU M6 6x4 USB-C Audio Interface with Studio-Quality Sound is better
Audio Quality
MOTU M6 features ESS Sabre32 DAC with 120 dB dynamic range.
Latency
MOTU M6 has ultra-low latency of 2.5 ms.
Features
MOTU M6 includes unique A/B monitor switch.
Why Solid State Logic SSL 2 Plus MKII USB Audio is better
Price
SSL 2 Plus MKII is $149.96 cheaper.
Sales Rank
SSL 2 Plus MKII has a higher sales rank.
User-Friendly
SSL 2 Plus MKII is designed for beginners.
Overall score
Specifications
| Spec | MOTU M6 6x4 USB-C Audio Interface with Studio-Quality Sound | Solid State Logic SSL 2 Plus MKII USB Audio |
|---|---|---|
| Dynamic Range | 120 dB | Not specified |
| Latency | 2.5 ms | Not specified |
| Headphone Outputs | 2 | 2 |
| AD/DA Converters | ESS Sabre32 | 32-Bit / 192 kHz |
| MIDI I/O | No | Yes |
Dimension comparison
Price Comparison
When it comes to pricing, the Solid State Logic SSL 2 Plus MKII is significantly more affordable than the MOTU M6. Priced at $299.99, the SSL 2 Plus MKII is about 33% cheaper than the MOTU M6, which retails for $449.95. The price difference of approximately $149.96 may appeal to budget-conscious musicians or podcasters looking for quality without breaking the bank. Additionally, the SSL 2 Plus MKII holds a higher sales rank at 6,139 compared to the MOTU M6 at 14,791, suggesting it may be a more popular choice among consumers in this price range.
Audio Quality
The MOTU M6 excels in audio quality, boasting best-in-class specifications that rival much higher-priced competitors. It features ESS Sabre32 Ultra DAC Technology, delivering a dynamic range of 120 dB on its line outputs. This level of precision is particularly crucial for users seeking pristine sound clarity during recording or mixing sessions. On the other hand, the SSL 2 Plus MKII also offers impressive audio performance with 32-bit/192 kHz AD/DA converters, but it does not specify a comparable dynamic range. For those who prioritize top-tier audio fidelity, the MOTU M6 may be the preferable choice.
Features and Functionality
In terms of features, the MOTU M6 provides several unique functionalities, such as a full-color LCD for metering and a unique A/B monitor switch, allowing users to quickly toggle between two pairs of monitors. It also includes loopback capabilities that simplify live streaming and podcasting, making it particularly useful for content creators. The SSL 2 Plus MKII, while also feature-rich, focuses on essential capabilities like dual discrete headphone outputs and MIDI I/O. However, it lacks some of the advanced features found in the MOTU M6, which may be a deciding factor for those with specific recording needs.
Design and Build Quality
Both audio interfaces sport a professional design, but they cater to different user preferences. The MOTU M6 has a sleek, modern look with a full-color LCD that provides visual feedback during recording. This design is particularly beneficial for users who value visual metering. Meanwhile, the SSL 2 Plus MKII maintains the classic SSL aesthetic, which is appealing to those who appreciate traditional studio looks. Both devices are built with quality in mind, but the MOTU M6 offers more visual interaction, which can enhance user experience during complex projects.
Latency Performance
Latency is a critical factor for recording musicians, and the MOTU M6 shines in this regard with an ultra-low round trip latency of just 2.5 ms at a 32 sample buffer and 96 kHz. This allows for near real-time monitoring, which is essential for live recording situations. In contrast, the SSL 2 Plus MKII does not specify its latency performance, leaving potential users in the dark about this important aspect. For professionals who require precise timing and minimal latency, the MOTU M6 is likely the superior option.
Target Audience
The MOTU M6 may appeal more to professional musicians, audio engineers, and podcasters looking for advanced features and top-tier audio fidelity. Its unique functionalities, such as the loopback for streaming and the A/B monitor switch, cater to a creative audience. Conversely, the SSL 2 Plus MKII is designed for a wider range of users, including beginners and seasoned professionals alike. Its simplicity and user-friendly design make it a good entry point for those new to recording while still offering high-quality audio performance.
Customer Feedback
Customer reviews can provide insight into product performance and satisfaction. The MOTU M6, though lower on the bestseller list at 14,791, has garnered attention for its audio quality and features. However, the SSL 2 Plus MKII’s higher sales rank indicates that it has resonated well with a larger audience, likely due to its balance of price and performance. Users often praise the SSL 2 Plus MKII for its ease of use and reliability, making it a trustworthy choice among home recording setups.
Which should you buy?
Choosing between the MOTU M6 and the Solid State Logic SSL 2 Plus MKII ultimately depends on your specific needs and budget. If audio quality, advanced features, and ultra-low latency are your top priorities, the MOTU M6 is the clear winner despite its higher price. However, if you are looking for a reliable, user-friendly interface with solid audio performance at a more accessible price point, the SSL 2 Plus MKII is an excellent choice. Consider your recording needs, whether you prioritize advanced features or ease of use, and make your decision accordingly.

