FOCUSRITE Scarlett 18i20 (4th Gen)

Focusrite Scarlett 18i20 (4th Generation) — 18-In/20-Out USB-C Audio Interface

The Focusrite Scarlett 18i20 (4th Gen) is the flagship 1U rackmount USB-C audio interface built for professional producers, project studios, and serious multi-instrument tracking. Equipped with RedNet-grade 122dB dynamic range converters, 8 remote-controllable preamps with 69dB gain, and dual AIR modes — analog Presence and DSP Harmonic Drive — it delivers commercial studio-level sound quality at a fraction of the cost. Intelligent tools like Auto Gain and Clip Safe handle level-setting automatically, so you spend less time troubleshooting and more time recording. With full ADAT expansion bringing the total I/O up to 26 inputs and 26 outputs, dual headphone amps, MIDI, S/PDIF, and Word Clock, the 18i20 is a complete, future-proof recording hub.

Key Features:
122dB Dynamic Range — RedNet flagship converter technology (borrowed from Focusrite's multi-thousand dollar professional line) delivers pristine clarity with zero audible noise floor
8 Remote-Controllable Preamps — 69dB gain range handles the most demanding dynamic microphones (SM7B, RE20) cleanly, with no external preamp lifter needed
Auto Gain — select your channels, hit Auto, play for 10 seconds; the interface automatically locks in the perfect recording level
Clip Safe — monitors input levels 96,000 times per second and adjusts gain in real time to prevent unexpected digital clipping, even mid-performance
Dual AIR Modes — switch between analog Presence mode (emulating the classic Focusrite ISA transformer console) or DSP Harmonic Drive for added vintage warmth on vocals and instruments
Expandable I/O Up to 26×26 — 8 analog combo XLR/TRS inputs + dual ADAT optical ports supporting up to 16 extra channels at 48kHz, S/PDIF coaxial, and Word Clock BNC
10 Balanced Analog Outputs — 1/4" TRS line outputs for complex outboard routing, summing mixers, or surround arrays
A/B Studio Monitor Switching — switch between two sets of studio monitors directly from the front panel to compare reference mixes instantly
Dual Independent Headphone Amps — two high-power stereo headphone outputs with dedicated volume halos, fully independent for tracking and cue mix use
Full Digital Connectivity — dual ADAT Optical I/O, S/PDIF coaxial (RCA), Word Clock Out (BNC), and 5-pin MIDI In/Out
24-bit / 192kHz — full professional resolution; 116dB A-D and 122dB D-A dynamic range
1U Rackmount Form Factor — includes attachable rack ears; powered by internal AC (standard IEC cable, no wall-wart)