Solid State Logic SSL 18
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Essential Information About the SSL 18 Audio Interface
Essential Information About the SSL 18 Audio Interface
- 32-bit/192 kHz Conversion with up to 125 dB dynamic range on monitor/line outputs and 120 dB on inputs and headphones, for uncompromising fidelity.
- 8 SSL Microphone Preamps with "4K" Legacy switch, HPF, +48 V phantom power, and 67 dB gain to capture the character of the 4000 series consoles.
- Comprehensive 19-inch Rack Connectivity: 10 line outputs, ADAT inputs, S/PDIF, Word Clock, MIDI, USB-C, dual headphone outputs with adjustable impedance.
- Modern Routing with stereo loopback, LMC talkback, and control via the free SSL 360deg app, ideal for studio, creation, and streaming.
Manufacturer Information
Solid State Logic
https://www.solidstatelogic.com
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Algam SAS
Email: contact@algam.net
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The First 19-inch Rack USB Interface from SSL
With the SSL 18, Solid State Logic launches its very first USB audio interface in a 1U format. Drawing on decades of the brand's analog and digital engineering, it brings the SSL sonic signature and the famous "mojo" of the 4000 consoles into a rack format thanks to the Legacy "4K" mode. It positions itself as a high-end solution for studios wanting to move from desktop to rack without compromise.Who Is It For and What Are Its Uses?
The SSL 18 is aimed at producers, engineers, and educational studios needing a substantial number of I/O and flexible monitoring. It excels in multi-mic recording, live capture, content creation, and multi-platform streaming thanks to stereo loopback, talkback with LMC, and two independent headphone outputs.Technical specifications
| Category | audio interface | Number of analogue inputs | 8 |
| Digital outputs | USB, S/PDIF, ADAT - up to 16 channels at 44.1 or 48 kHz | Number of digital inputs | 18 |
| Digital input type | USB, S/PDIF, ADAT - up to 16 channels at 44.1 or 48 kHz | Number of instrument inputs | 2 |
| Format | rack | Number of microphone inputs | 8 |
| Phantom power supply | Yes | Number of outputs | 10 |
| Sampling frequency | 192 kHz | Number of digital outputs | 18 |
| Interfacing | USB-C | Color | Grey |
| Max resolution | 32-bits | MIDI | Yes |
| Worldclock | Yes | Power supply | AC Adapter |
| Headphone outputs | Yes | Weight | 6 kg |
| Number of inputs | 26 | Dimensions (mm) | 630 x 370 x 110 |
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Excellent external sound card, high quality sound, easy to use thanks to its buttons on the front panel and the software looks like an analog table with a lot of routing options. The card is recognized perfectly on Mac without the need for a driver.
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Questions frequently asked
How many microphones can be recorded simultaneously?
The eight built-in microphone preamps allow connecting up to 8 microphones. Each offers 67 dB of gain, phantom power, and a high-pass filter.
Does the SSL 18 have instrument inputs for guitar or bass?
Two instrument inputs are available within the 8 analog inputs of the interface.
Can external preamps be added via ADAT?
The ADAT digital expansion supports up to 16 channels at 44.1 or 48 kHz. S/PDIF, USB, and Word Clock connections are also provided.
What is the purpose of the Legacy 4K mode on this SSL interface?
The Legacy 4K mode adds a subtle boost to the high frequencies and gentle harmonic distortion. This coloration is inspired by the sonic character of SSL 4000 consoles.
Is the SSL 18 suitable for streaming and headphone monitoring?
Stereo loopback with assignable sources facilitates streaming workflows. Two independent headphone outputs with selectable impedance are included. The talkback function features a Listen Mic Compressor.



