SOLID STATE LOGIC SSL18 USB-C - USB-C 26 inputs - 28 outputs
RSL SSL18
USB-C - USB-C 26 inputs - 28 outputs
A new era begins.
We present the SSL 18, Solid State Logic's very first rack-mountable USB audio interface.
Stock expected from 11/04/25
Availability date: 2025-04-11
More info
Developed from our unrivalled expertise in analog and digital design, the SSL 18 delivers outstanding audio performance and a studio-ready feature set, with the SSL signature sound and superior quality that professionals trust. Welcome to a new era of rack-mounted audio interfaces.
The SSL 18 surpasses expectations for a 19" rack-mounted USB audio interface in its class. It's equipped with next-generation 32-bit converters, SSL-designed high-performance mic preamps, an advanced digital mixer, Legacy 4K analog enhancement, and a complete set of digital I/Os. Whether you're recording, producing or mixing, the SSL 18 improves workflow while elevating the performance of your creative space. It's the centerpiece of your studio.
Best-in-class audio performance:
Its next-generation 32-bit/192 kHz converters allow the SSL 18's analog design to impress you! With an unrivalled dynamic range of 120 dB on all mic, line and instrument inputs, so you can capture your sources like never before. Enjoy 125 dB dynamic range on monitor and line outputs, so you can listen to your music with uncompromising fidelity. Need to work with headphones? No problem, with the unbeatable 120 dB dynamic range offered by the two headphone outputs.
32-bit/192 kHz: unrivalled analog and digital performance.
It also features eight SSL-designed mic/line inputs, with switchable mic/line configuration.
The SSL 18 is equipped with eight high-performance SSL mic preamps, with switchable mic/line configuration. Leveraging our renowned engineering expertise, they deliver ultra-low-noise recordings and wide dynamic range, ensuring you capture every performance detail with stunning accuracy. Their advanced two-stage circuitry guarantees ultra-low distortion while retaining the natural character of the source. You can also set them to Legacy 4K mode to add true analog saturation and the iconic 4000 Series sound to vocals, drums and all types of sound sources. Located on the front of the unit, inputs 1 and 2 also offer instrument/Hi-Z inputs to capture DIY guitars and vintage synthesizers/drum machines.
120 dB dynamic range, -130.5 dBu balanced output noise level, Legacy 4K analog enhancement.
10 line outputs:
The SSL 18 is equipped with ten balanced line-level outputs located on the rear of the unit. To ensure optimum signal integrity and maximize headroom, line outputs 1 and 2, as well as outputs 3 and 4, can be configured between +9 and +24 dBu. This guarantees perfect compatibility with a wide range of studio monitors and vintage equipment with lower output levels. Outputs 3 to 10 operate at +24 dBu, perfect for integrating professional external equipment. For producers, all outputs are DC-coupled and can send control voltage to synthesizers and modular systems.
Its dynamic range is 125 dB, its operating levels are +24 dBu and it's possible to switch main and secondary speakers. The SSL 18 also features DC-coupled outputs.
Two high-performance headphone outputs:
Customized headphone mixes thanks to two independent headphone outputs configurable for different types with "Standard", "High Sensitivity" and "High Impedance" settings. The SSL 18's headphone outputs can also be reused as line-level outputs for added flexibility.
120 dB dynamic range; two independent outputs; configurable headphone modes.
4K Legacy analog behavior:
SSL 4000 Series consoles (often referred to as "4K") are renowned for imparting a unique "mojo" to the sounds and instruments that flow through them. This "mojo" comes from the multiple stages of harmonic distortion in compressors' VCAs, VCA faders and other crucial components such as transistor mixing amplifiers. Using modern components, SSL has developed a circuit that distills these two essential characteristics of 4K sound into a single design. The Legacy 4K Analogue Enhancement injects finely tuned, smooth-sounding harmonic distortion and a high-frequency EQ boost to put them "front and center" while remaining highly musical, giving your sound the 4K mojo and presence that artists and engineers have loved for decades.
Authentic analog saturation / Musical high-frequency enhancement / Immortal 4K sound.
Complete digital inputs and outputs:
Thanks to a multitude of digital audio connections, the SSL 18 is ready to expand its input/output possibilities at any time, with 16 additional channels via ADAT and two more via S/PDIF. The SSL 18's dedicated Word Clock output provides a solid clock for integrating external digital devices into your system.
16 channels of ADAT I/O + 2 channels of S/PDIF I/O / clock output.
Monitor controller + Talkback with monitor mic compressor:
The SSL 18 features a complete monitor control section with integrated Talkback input. Line outputs 1 and 2, as well as outputs 3 and 4, offer alternative speaker switching with Alt, Talk and Cut accessible via the monitor controls on the front panel. You can also customize the monitor controls via SSL 360 to suit your workflow. Switch the Talkback input to LINE mode and process the audio again via the classic Listen Mic compressor, perfect for achieving parallel compression on drums, vocals, etc...
Configurable monitoring section, Alt monitor switching, Talkback input with Mic or Line mode + Legendary LMC analog compressor.
Virtual mixer via the SSL 360 application:
The SSL 18 offers complete management of all inputs and outputs, plus detailed, scalable visualization in the 360 software. Create and manage the mix from your Control Room. Configure four additional monitor mixes for artists. What's more, a flexible mirror routing system lets you route any master input or output directly to an output, ideal for feeding personal monitoring systems, personal returns and external effects. Create different templates for recording, mixing, etc...then save them as profiles in the SSL 18 mixer.
SSL Production Pack:
For decades, SSL has been helping world-renowned artists, producers and engineers produce quality music and audio. They know it's crucial to have the right tools for the job, which is why SSL has teamed up with some of the industry's leading brands to bring you the SSL Production Pack, which comes free with recorded SSL 18 audio interfaces. With a selection of must-have virtual instruments, plug-ins, samples and DAWs, fuel your creativity and bring your productions to life with the SSL Production Pack (worth over €1,500).
6-month trial of Complete Access is included with SSL 18.
As an eligible SSL interface owner, enjoy a free 6-month subscription to Complete Access. With all the plug-ins from Solid State Logic, Slate Digital and Harrison Audio, Complete Access gives you all the software tools you need to create your next success.
Key features:
- 26-in/28-out USB-C audio interface for Mac and Windows.
- 8 mic/line level inputs.
o 4K analog enhancement, polarity inversion, high-pass filters and 48V phantom power per channel.
o Configurable analog insertion points for inputs 1 and 2, perfect for tracking with analog gear.
o Inputs 1 and 2 are switchable to instrument level.
o Line inputs bypass the preamp - perfect for integrating external preamps.
- 10 balanced line outputs.
o Switching for second monitor pair.
o +9 dBu /+24 dBu output level configuration options for pairs 1&2 and 3&4 to best suit your monitors.
o DC-coupled outputs are capable of sending control voltages to synthesizers and modular systems.
- 2 independent, powerful headphone outputs with dedicated level controls.
o 3 mode options to suit different headphone impedances - standard, high sensitivity, high impedance.
o Create custom headphone mixes.
o Reuse as line outputs.
- Dedicated Talkback input with Listen Mic Compressor (LMC).
o Talkback input can also be used in LINE mode for creative stem processing via LMC during production and mixing.
- +24 dBu operating level for inputs and outputs - perfect for integrating professional external equipment as hardware inserts.
- 16 channels of ADAT I/O at 44.1/48 kHz, 8 channels at 96 kHz.
- 2 S/PDIF channels (coaxial or optical).
- MIDI I/O on TRS 3.5 mm Type A jacks.
- Flexible clock options - internal (clock signal available on Word clock output), or clock from an incoming ADAT or S/PDIF signal.
- Next-generation 32-bit/192 kHz converters. First-rate audio performance across the board:
o Best-in-class low-noise mic preamps, with exceptional -130.5 dBu EIN and 67 dB gain range for working with any microphone.
o Best-in-class dynamic range of 120 dB on all inputs and headphone outputs.
o Best-in-class dynamic range of 125 dB on monitor and line outputs.
- SSL 18 low-latency mixer powered by SSL 360.
o Complete management of all inputs and outputs on the SSL 18 low-latency mixer.
o Easily create the mix in your Control Room, as well as 4 additional custom mixes - HP A (stereo), HP B (stereo), LINE 3-4 (stereo or dual mono).
o Flexible mirrored routing system allowing any input or aux master to be routed directly to an output - perfect for feeding personal mixer systems and external effects.
o Customize the monitoring section's front panel buttons to suit your workflow.
- Save/load SSL 18 Mixer profiles for different types of workflow - e.g., creating recording or mixing templates, etc.
- Stereo loopback with selectable loopback source.
- SSL Production Pack software included - worth over €1,500.
The SSL 18 surpasses expectations for a 19" rack-mounted USB audio interface in its class. It's equipped with next-generation 32-bit converters, SSL-designed high-performance mic preamps, an advanced digital mixer, Legacy 4K analog enhancement, and a complete set of digital I/Os. Whether you're recording, producing or mixing, the SSL 18 improves workflow while elevating the performance of your creative space. It's the centerpiece of your studio.
Best-in-class audio performance:
Its next-generation 32-bit/192 kHz converters allow the SSL 18's analog design to impress you! With an unrivalled dynamic range of 120 dB on all mic, line and instrument inputs, so you can capture your sources like never before. Enjoy 125 dB dynamic range on monitor and line outputs, so you can listen to your music with uncompromising fidelity. Need to work with headphones? No problem, with the unbeatable 120 dB dynamic range offered by the two headphone outputs.
32-bit/192 kHz: unrivalled analog and digital performance.
It also features eight SSL-designed mic/line inputs, with switchable mic/line configuration.
The SSL 18 is equipped with eight high-performance SSL mic preamps, with switchable mic/line configuration. Leveraging our renowned engineering expertise, they deliver ultra-low-noise recordings and wide dynamic range, ensuring you capture every performance detail with stunning accuracy. Their advanced two-stage circuitry guarantees ultra-low distortion while retaining the natural character of the source. You can also set them to Legacy 4K mode to add true analog saturation and the iconic 4000 Series sound to vocals, drums and all types of sound sources. Located on the front of the unit, inputs 1 and 2 also offer instrument/Hi-Z inputs to capture DIY guitars and vintage synthesizers/drum machines.
120 dB dynamic range, -130.5 dBu balanced output noise level, Legacy 4K analog enhancement.
10 line outputs:
The SSL 18 is equipped with ten balanced line-level outputs located on the rear of the unit. To ensure optimum signal integrity and maximize headroom, line outputs 1 and 2, as well as outputs 3 and 4, can be configured between +9 and +24 dBu. This guarantees perfect compatibility with a wide range of studio monitors and vintage equipment with lower output levels. Outputs 3 to 10 operate at +24 dBu, perfect for integrating professional external equipment. For producers, all outputs are DC-coupled and can send control voltage to synthesizers and modular systems.
Its dynamic range is 125 dB, its operating levels are +24 dBu and it's possible to switch main and secondary speakers. The SSL 18 also features DC-coupled outputs.
Two high-performance headphone outputs:
Customized headphone mixes thanks to two independent headphone outputs configurable for different types with "Standard", "High Sensitivity" and "High Impedance" settings. The SSL 18's headphone outputs can also be reused as line-level outputs for added flexibility.
120 dB dynamic range; two independent outputs; configurable headphone modes.
4K Legacy analog behavior:
SSL 4000 Series consoles (often referred to as "4K") are renowned for imparting a unique "mojo" to the sounds and instruments that flow through them. This "mojo" comes from the multiple stages of harmonic distortion in compressors' VCAs, VCA faders and other crucial components such as transistor mixing amplifiers. Using modern components, SSL has developed a circuit that distills these two essential characteristics of 4K sound into a single design. The Legacy 4K Analogue Enhancement injects finely tuned, smooth-sounding harmonic distortion and a high-frequency EQ boost to put them "front and center" while remaining highly musical, giving your sound the 4K mojo and presence that artists and engineers have loved for decades.
Authentic analog saturation / Musical high-frequency enhancement / Immortal 4K sound.
Complete digital inputs and outputs:
Thanks to a multitude of digital audio connections, the SSL 18 is ready to expand its input/output possibilities at any time, with 16 additional channels via ADAT and two more via S/PDIF. The SSL 18's dedicated Word Clock output provides a solid clock for integrating external digital devices into your system.
16 channels of ADAT I/O + 2 channels of S/PDIF I/O / clock output.
Monitor controller + Talkback with monitor mic compressor:
The SSL 18 features a complete monitor control section with integrated Talkback input. Line outputs 1 and 2, as well as outputs 3 and 4, offer alternative speaker switching with Alt, Talk and Cut accessible via the monitor controls on the front panel. You can also customize the monitor controls via SSL 360 to suit your workflow. Switch the Talkback input to LINE mode and process the audio again via the classic Listen Mic compressor, perfect for achieving parallel compression on drums, vocals, etc...
Configurable monitoring section, Alt monitor switching, Talkback input with Mic or Line mode + Legendary LMC analog compressor.
Virtual mixer via the SSL 360 application:
The SSL 18 offers complete management of all inputs and outputs, plus detailed, scalable visualization in the 360 software. Create and manage the mix from your Control Room. Configure four additional monitor mixes for artists. What's more, a flexible mirror routing system lets you route any master input or output directly to an output, ideal for feeding personal monitoring systems, personal returns and external effects. Create different templates for recording, mixing, etc...then save them as profiles in the SSL 18 mixer.
SSL Production Pack:
For decades, SSL has been helping world-renowned artists, producers and engineers produce quality music and audio. They know it's crucial to have the right tools for the job, which is why SSL has teamed up with some of the industry's leading brands to bring you the SSL Production Pack, which comes free with recorded SSL 18 audio interfaces. With a selection of must-have virtual instruments, plug-ins, samples and DAWs, fuel your creativity and bring your productions to life with the SSL Production Pack (worth over €1,500).
6-month trial of Complete Access is included with SSL 18.
As an eligible SSL interface owner, enjoy a free 6-month subscription to Complete Access. With all the plug-ins from Solid State Logic, Slate Digital and Harrison Audio, Complete Access gives you all the software tools you need to create your next success.
Key features:
- 26-in/28-out USB-C audio interface for Mac and Windows.
- 8 mic/line level inputs.
o 4K analog enhancement, polarity inversion, high-pass filters and 48V phantom power per channel.
o Configurable analog insertion points for inputs 1 and 2, perfect for tracking with analog gear.
o Inputs 1 and 2 are switchable to instrument level.
o Line inputs bypass the preamp - perfect for integrating external preamps.
- 10 balanced line outputs.
o Switching for second monitor pair.
o +9 dBu /+24 dBu output level configuration options for pairs 1&2 and 3&4 to best suit your monitors.
o DC-coupled outputs are capable of sending control voltages to synthesizers and modular systems.
- 2 independent, powerful headphone outputs with dedicated level controls.
o 3 mode options to suit different headphone impedances - standard, high sensitivity, high impedance.
o Create custom headphone mixes.
o Reuse as line outputs.
- Dedicated Talkback input with Listen Mic Compressor (LMC).
o Talkback input can also be used in LINE mode for creative stem processing via LMC during production and mixing.
- +24 dBu operating level for inputs and outputs - perfect for integrating professional external equipment as hardware inserts.
- 16 channels of ADAT I/O at 44.1/48 kHz, 8 channels at 96 kHz.
- 2 S/PDIF channels (coaxial or optical).
- MIDI I/O on TRS 3.5 mm Type A jacks.
- Flexible clock options - internal (clock signal available on Word clock output), or clock from an incoming ADAT or S/PDIF signal.
- Next-generation 32-bit/192 kHz converters. First-rate audio performance across the board:
o Best-in-class low-noise mic preamps, with exceptional -130.5 dBu EIN and 67 dB gain range for working with any microphone.
o Best-in-class dynamic range of 120 dB on all inputs and headphone outputs.
o Best-in-class dynamic range of 125 dB on monitor and line outputs.
- SSL 18 low-latency mixer powered by SSL 360.
o Complete management of all inputs and outputs on the SSL 18 low-latency mixer.
o Easily create the mix in your Control Room, as well as 4 additional custom mixes - HP A (stereo), HP B (stereo), LINE 3-4 (stereo or dual mono).
o Flexible mirrored routing system allowing any input or aux master to be routed directly to an output - perfect for feeding personal mixer systems and external effects.
o Customize the monitoring section's front panel buttons to suit your workflow.
- Save/load SSL 18 Mixer profiles for different types of workflow - e.g., creating recording or mixing templates, etc.
- Stereo loopback with selectable loopback source.
- SSL Production Pack software included - worth over €1,500.
- Power supply: AC adapter
- Phantom power: Yes
- Category: audio interface
- Color: Gray, Black
- Dimensions (mm): 630 x 370 x 110
- Format: rack
- Sampling frequency: 192 kHz
- Interfacing: USB-C
- MIDI interface: Yes
- Number of inputs: 26
- Number of analog inputs: 8
- Number of digital inputs: 18
- Number of outputs: 10
- Number of digital outputs: 18
- Number of instrument inputs: 2
- Number of microphone inputs: 8
- Weight (kg): 6 kg
- Max resolution: 32-bit
- Digital input type: USB, S/PDIF, ADAT - up to 16 channels at 44.1 or 48 kHz
- Digital output type: USB, S/PDIF, ADAT - up to 16 channels at 44.1 or 48 kHz
- Worldclock: Yes
- Additional specs:
- 1 talkback input (combo XLR/jack 6.35 mm)
- 2 send out (jack 6.35 mm)
- 2 return inserts (jack 6.35 mm)
- MIDI in/out (mini jack 3.5 mm Type A)