The Focusrite Scarlett 18i20 4th Generation is the flagship model of the Scarlett range, designed for professional producers, engineers, and studios requiring high I/O flexibility and exceptional sound quality. With 18 inputs and 20 outputs, eight Scarlett mic preamps, and comprehensive digital connectivity, it’s ideal for full-band tracking, outboard integration, and hybrid production workflows.
Key Features
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18 Inputs / 20 Outputs – Fully equipped for multi-instrument recording, re-amping, or studio integration.
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8 Scarlett Mic Preamps (4th Gen) – Low-noise, ultra-clear preamps with up to 69 dB gain and switchable Air mode for added brightness and detail.
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Auto Gain & Clip Safe – Automatically sets input levels and prevents overloads for perfect takes every time.
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24-bit / 192 kHz AD/DA Conversion – Professional-grade converters deliver up to 122 dB dynamic range for detailed and accurate audio capture.
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ADAT Expandability – Add up to 16 additional channels via optical inputs for external preamps or expanders.
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Dual Headphone Outputs – Independent control for artists and engineers.
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Word Clock I/O – Sync seamlessly with other digital devices.
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MIDI I/O – Connect external keyboards, drum machines, or control surfaces.
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Loopback Function – Perfect for streaming, sampling, and podcasting.
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Comprehensive Monitoring Control – Dedicated monitor knob and speaker switching.
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USB-C Connectivity – Fast, reliable, and bus-powered operation on Mac and Windows.
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Software Bundle Included – Hitmaker Expansion (Antares Auto-Tune Access, Softube, XLN Audio, Brainworx, and more).
Technical Specifications
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Mic Inputs: 8 x XLR/TRS combo (Mic/Line/Instrument)
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Line Inputs: 10 x TRS (includes 2 front-panel instrument inputs)
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Digital Inputs: 8 x ADAT optical, 2 x S/PDIF
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Outputs: 10 x Line, 8 x ADAT optical, 2 x S/PDIF
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Headphone Outputs: 2 x ¼″ TRS with independent control
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Dynamic Range: Up to 122 dB (A-weighted)
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Mic Gain Range: 0–69 dB
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Sample Rate / Bit Depth: 24-bit / 44.1–192 kHz
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Phantom Power: +48 V (switchable in pairs)
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MIDI I/O: Yes
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Word Clock I/O: Yes
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Power Supply: External 12 V DC adapter
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USB Type: USB-C
