Focusrite Scarlett 18i20 4th Gen Audio Interface
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Description
The Focusrite Scarlett 18i20 4th Gen is Focusrite's flagship Scarlett interface: a rack-mountable, 26-in, 26-out USB-C audio interface with eight ultra-low-noise mic preamps. Designed for engineers who need serious I/O, it handles everything from full drum sessions to tracking rooms full of hardware synths, with enough analog and digital connectivity to serve as a studio's central hub.
Professional Studio Features
All eight preamps offer 69dB of gain and can be remote-controlled via Focusrite Control 2. Dual ADAT ports provide up to 16 additional channels of digital I/O, and a Word Clock output lets you synchronize external converters and digital recorders. A built-in talkback microphone, 10 line outputs with A/B speaker switching, and multi-speaker monitor groups (including 5.1 surround) round out the feature set.
Analog Connectivity
- 8 rear-panel Neutrik combo XLR/1/4" inputs (mic or line)
- 2 front-panel 1/4" inputs (mic, line, or Hi-Z instrument)
- 10 rear-panel balanced 1/4" TRS line outputs (including A/B speaker pairs)
- 2 front-panel 1/4" headphone outputs (independent mixes)
- Independent 48V phantom power per channel
Digital Connectivity
- Dual ADAT optical In and Out (4 TOSLINK ports): 16 channels at 44.1/48kHz, 8 channels at 88.2/96kHz
- S/PDIF In and Out (coaxial RCA): 2 channels
- MIDI In and Out (5-pin DIN)
- Word Clock Out (BNC)
- USB-C (USB 2.0)
Key Features
- 24-bit/192kHz conversion with 122dB dynamic range (D-A)
- 69dB mic preamp gain range across all eight preamps
- Air Presence and Harmonic Drive modes
- Auto Gain and Clip Safe (up to 8 channels simultaneously)
- Built-in talkback microphone
- A/B speaker switching and multi-speaker monitor groups (2.1, 5.1)
- Simultaneous I/O: 26 x 26
- Desktop or 1U rack-mountable (rack ears included)
- Focusrite Control 2 with mobile remote control (iOS/Android)
Included Software
- Pro Tools Intro+
- Ableton Live Lite
- Cubase LE
- Hitmaker Expansion bundle (instruments, effects, samples)
What's in the Box
- Scarlett 18i20 audio interface
- Rack ears
- 1.5m USB-C to USB-C cable
- USB-C to USB-A adaptor
- IEC power cable














