Review · Music & creators
SSL 2+ MKII review
Solid State Logic's two-in, four-out USB-C interface with two SSL preamps, the Legacy 4K enhancement circuit and two headphone outputs.
By the HearSmart research desk · Updated November 8, 2026
- Performance (40%)
- 9.3
- Ease of use (25%)
- 8.4
- Value (35%)
- 7.9
The SSL 2+ MKII is the most connected interface on this list. It has two SSL mic preamps with a 64 dB gain range, a dedicated high pass filter and 48V phantom power, plus two auto-detect instrument inputs. Converters run at 32-bit and 192 kHz, and SSL lists -130.5 dBu EIN on the preamps. The Legacy 4K button adds an analog-style enhancement inspired by SSL consoles. Where it pulls ahead is outputs: two independent headphone outputs let a singer and a guitarist each hear the session, and four balanced TRS outputs can feed speakers or send control voltage to synths. Stereo loopback and the SSL Production Pack, with perpetual Vocalstrip 2 and Drumstrip licenses, Melodyne Essential and Ableton Live Lite, are included. The tradeoffs: at $299.99 it is the most expensive pick here, there is no auto gain, and several bundle items are three-month trials. We compared documented features and published prices; we did not test it.
Who it is for
Musicians who record with a partner, need two headphone mixes or want the most outputs for speakers and synths.
Price
$299.99 US launch price from SSL.
SSL 2+ MKII: £239.99 ex.VAT / $299.99 / €289.99 + tax
Quoted from the vendor pricing page on November 8, 2026.
Key features
- Two SSL mic preamps with high pass filter, 64 dB gain range and 48V phantom power
- 32-bit 192 kHz converters
- Legacy 4K Analogue Enhancement Circuit
- Two independent headphone outputs and four balanced TRS outputs
- SSL Production Pack software bundle and stereo loopback
Strengths and weaknesses
- Strength: Two independent headphone outputs for recording with a second person
- Strength: 64 dB gain range and dedicated high pass filters
- Strength: DC-coupled outputs can send control voltage to synths
- Weakness: Highest price on this list at $299.99
- Weakness: No automatic gain setting
- Weakness: Several bundle items are three-month subscriptions
Key facts
- Inputs and outputs: 2-in / 4-out
- Mic preamp gain: 64 dB range
- Mic EIN: -130.5 dBu A-weighted, per SSL
- Headphone outputs: Two, independent
- Connection: USB 2.0 Type C, C-to-C and C-to-A cables in the box
Where it ranks
SSL 2+ MKII is No. 4 in our Best Audio Interfaces verdict.
Alternatives we scored
Visit solidstatelogic.com · Questions or corrections: editorial@hearsmart.org