Focusrite Scarlett 18i8 2nd Generation USB Audio Interface

SKU: A09121 Category: Tag:

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  • 18 Inputs / 8 Outputs
  • 4 Scarlett Inputs, 4 Line Inputs
  • 8 More Inputs via ADAT
  • MIDI & S/PDF I/O
  • 24-Bit/192 kHz

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The Scarlett 18i8 USB 2.0 Audio Interface from Focusrite features 18 inputs and 8 outputs, including 4 front-panel microphone preamps on XLR/TRS combo inputs. Each of the microphone inputs doubles as a line input; the first two also feature switchable Hi-Z instrument inputs. The 18i8 is compatible with Mac, Windows, and iPad – requires an Apple Camera Connection Kit, sold separately.

The Scarlett 18i8 is capable of resolutions up to 24-bit/96 kHz and features a wide range of connectivity. Its 4 front microphone inputs can provide up to 60 dB of gain and have switchable Phantom power. The rear panel has 4 additional 1/4″ TRS line inputs as well as an 8-channel ADAT Lightpipe connection and a stereo S/PDIF input. The 18i8 also provides MIDI input and output jacks.

The Scarlett 18i8 has left and right 1/4″ TRS monitor outputs, a stereo S/PDIF output, and two independent headphone outputs. It is housed in a rugged and compact unibody metal case to withstand constant use.

The Focusrite Red 2 and Red 3 Plug-In Suite (AAX, Audio Units, VST) delivers accurately modeled plug-ins based on the classic Focusrite Red 2 EQ and Red 3 Compressor hardware. The plug-ins allow for conveniently exploring the sound of the hardware originals from within Pro Tools (10 and above), along with other audio software. The software is a free download for new and current owners of the Scarlett 18i8.

In addition to the Red 2 and Red 3 Plug-in Suite, the interface includes the Softube Time and Tone Pack. Modeled after the Drawmer 1973 FET Stereo compressor hardware, the Drawmer S73 Intelligent Master Processor is a plug-in that aids in balancing and shaping a mix. TSAR-1R Reverb adds space, depth, and width to a sound. Change settings with a single slider, from realistic three-dimensional rooms to dramatic and dreamlike halls. Tube Delay is an echo effect that can go from clean to rude by overdriving its three modeled tube stages – delivering everything from realistic room echoes, to rockabilly style slap back, to dub reggae echo. Saturation Knob is a modeled output distortion unit that adds grit and warmth – use it to fatten up bass lines, add some harmonics and shimmer to vocals, or simply destroy a drum loop.


Gain Halos
  • Unique LED ring “gain halo” indicators make it clear when you have adequate signal for recording. Once the halos are green you have a good level; if they turn red, you’ve applied too much gain.
Scarlett MixControl
  • Scarlet MixControl provides an 18 x 8 DSP mixer with flexible routing capabilities, intuitive one-click presets, and lower than 1.4 ms latency.
Monitor Control & Mute
  • A large main monitor knob with a mute button means that monitor levels are always at your fingertips.
Software Bundle
  • Scarlett 18i8 comes with the Scarlett Plug-in Suite, the Novation Bass Station soft synth, and Loopmasters sample content.
Focurite Red Plug-In Suite
  • Focusrite Red 2 and Red 3 Plug-In Suite (AAX, Audio Units, VST) delivers accurately modeled plug-ins based on the classic Focusrite Red 2 EQ and Red 3 Compressor hardware
Softube Time and Tone Bundle
  • Contains Drawmer S73 Intelligent Master Processor, TSAR-1R Reverb, Tube Delay echo effect, and Saturation Knob, a modeled output distortion unit

What's in the box

System Requirements
Mac System RequirementsOS X 10.7 (Lion), 10.8 (Mountain Lion), 10.9 (Mavericks), 10.10 (Yosemite) Available USB 2.0 port
Windows System RequirementsWindows 7 (all versions) or Windows 8 (excluding RT) Available USB 2.0 port
Inputs & Outputs
Analog Inputs2 x XLR/TRS combo jack - Mic/Line/Hi-Z Instrument 2 x XLR/TRS combo jack - Mic/Line 4 x 1/4" TRS - Line In
Digital Inputs1 x RCA coaxial - S/PDIF stereo 1 x TOSLINK optical - ADAT 8-channel optical @ 44.1/48 kHz
MIDI Ports1 x 5-pin DIN - MIDI input 1 x 5-pin DIN - MIDI output
Analog Outputs2 x 1/4" TRS - Monitor Output L/R
Digital Outputs1 x RCA coaxial - S/PDIF stereo output
Headphone Outputs2 x 1/4" TRS stereo
USB Connector1 x USB 2.0 type B
Dynamic RangeA/D: 103 dB CCIR-RMS (all inputs) D/A: 104 dB CCIR-RMS (line outputs)
Sample Rates44.1, 48, 88.2, 96 kHz
Bit Depth16-, 24-bit
Clock Jitter< 250 ps
Phantom Power for Mic Inputs+48 V, switchable
Microphone Inputs
Frequency Response±0.5 dB @ 20 Hz, ±0.1 dB @ 20 kHz; min. gain
THD + N-96 dB (1 kHz, -1 dBFS, 20 kHz BW)
Equivalent Input Noise-122 dBu CCIR-RMS (measured at 60 dB of gain with 150 ohm termination)
Maximum Input Level+9 dBu (without pad)
Line Inputs
Frequency Response±0.5 dB @ 20 Hz , ±0.2 dB @ 20 kHz (min. gain)
THD + N-83 dB (1 kHz, -1 dBFS, 20 kHz BW)
Noise-105 dBFS CCIR-RMS (min. gain, 50 ohm termination)
Maximum Input Level> +28 dBu
Instrument Inputs
Frequency Response± 0.3 dB @ 20 Hz, ± 0.1 dB @ 20 kHz (min. gain)
THD + N-83 dB (1 kHz, -1 dBFS, 20 kHz BW)
Noise-103 dBFS CCIR-RMS (measured at min. gain)
Maximum Input Level+8 dB (without pad)
Line Outputs
Maximum Output Level+16 dBu, balanced (@ 0 dBFS)
THD + N-99 dB (1 kHz, -1 dBFS, 20 kHz BW)
Dimensions & Weight
Kensington Security SlotYes
Dimensions (W x D x H)8.94 x 7.09 x 2.60" (227 x 180 x 66 mm)


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