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Focusrite Scarlett 18i8 (2nd Gen) USB Audio Interface  

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Four combo inputs with Scarlett mic preamps and two newly designed high headroom instrument inputs let you record any combination of instruments or vocals together. Connect your synths, keyboards or m... Click To Read More About This Product

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Four combo inputs with Scarlett mic preamps and two newly designed high headroom instrument inputs let you record any combination of instruments or vocals together. Connect your synths, keyboards or mixers into four additional line inputs on the rear panel, and connect any equipment with digital I/O to the SPDIF inputs to record ten simultaneous channels. Connect an OctoPre via ADAT, expanding to 12 mic preamps and 16 analog inputs. Two discrete headphone outputs let you send separate headphone mixes to two artists, or an engineer and artist, while two balanced jack outputs let you connect to your professional studio monitors. With further MIDI connectivity, you can also integrate your favorite hardware synths with your DAW.

Remote control from iPhone or iPad
Download the free Focusrite iOS Control app and adjust cue mixes created with the Focusrite Control desktop app remotely from an iPad, iPhone or iPod touch.

New Generation - Better in Every Way
The second generation Scarlett range is packed full of upgrades. New super-low latency* will bring confidence to your performance, letting you record and monitor with software effects in real time. New metal gain controls and a sleeker red metal chassis underscore its improved industrial design, built to go anywhere. The Scarlett range also now operates at sample rates all the way up to 192kHz, and the input channels have evolved too. The latest Scarlett mic preamp features a more even gain structure, so you can accurately set your levels, and the instrument input has also been completely redesigned with greater headroom to handle seriously hot guitar pick-ups. Finally, Focusrite have provided analog protection circuitry across both the inputs and the outputs, to guard your interface against unwanted power surges.

Intuitive Mix Control, Red Plug-ins and More
The included 'Focusrite Control' is a brand new software mixer for easy configuration of monitoring and routing setups. Simple and intuitive to use, Focusrite Control offers a traditional mixer workflow and allows immediate access to internal hardware functions. Also included are the software and effects you need; an exclusive version of Pro Tools | First - Focusrite Creative Pack (featuring 12 additional plug-ins including the Eleven Lite for real life guitar amp emulations), Ableton Live Lite, the Softube Time and Tone Bundle, Focusrite's Red Plug-In Suite, 2GB of Loopmasters samples and more.

* Super-low roundtrip latency was measured at 2.74ms, working at 96kHz with a 32 samples buffer on Logic Pro X, running on a Mac Pro and OS 10.11

  • Two newly designed instrument inputs, now with increased headroom
  • Class-leading digital conversion at up to 24-bit / 192kHz
  • Super-low latency* lets you perform and produce using effects in real time, with no need for DSP
  • Two independent balanced analog outputs for connecting studio monitors
  • Two discrete headphone outputs with dedicated volume controls
  • Expand up to eight additional analog inputs via ADAT
  • Focusrite Control software to easily configure your monitoring and routing setups
  • Includes Pro Tools | First - Focusrite Creative Pack and Ableton Live Lite
  • All the additional software and loops you need to record
  • Use it with all major DAWs on Mac and PC
  • MIDI I/O connectivity, ideal for sending/receiving MIDI
  • Stereo S/PDIF In and Out for connecting other digital devices
  • A-D Dynamic Range: 109 dB A-weighted (all inputs)

  • D-A Dynamic Range: 108 dB A-weighted (line outputs)
    Supported sample rates: 44.1 kHz, 48 kHz, 88.2 kHz A 96 kHz
    Clock jitter: <250 ps

    Microphone Inputs
    Frequency Response: 20 Hz ± 0.5 dB, 20 kHz ± 0.1 dB (min. gain)
    THD+N: -96 dB (1 kHz, –1dBFS, 20 kHz BW)
    Noise EIN: –122 dBu CCIR-RMS (measured at 60 dB of gain with 150 ohm termination)
    Maximum input level: +9 dBu (without pad)

    Line Inputs (Front Panel)
    Frequency Response: 20 Hz ± 0.5 dB, 20 kHz ± 0.2 dB (min. gain)
    THD+N: -83 dB (1 kHz, –1dBFS, 20 kHz BW)
    Noise (NiPoS): –105 dBFS CCIR-RMS (measured at min. gain with 50 ohm termination)
    Maximum input level: > +28 dBu

    Line Inputs (Rear Panel)
    Frequency Response: 20 Hz ± 0.5 dB, 20 kHz ± 0.1 dB (min. gain)
    THD+N: –96dB (1 kHz, –1dBFS, 20 kHz BW)
    Noise (NiPoS): -110dBFS CCIR-RMS (measured at min. gain with 50 ohm termination)

    Instrument Inputs
    Frequency Response: 20 Hz ± 0.3 dB, 20 kHz ± 0.1 dB (min. gain)
    THD+N: -83 dB (1 kHz, –1dBFS, 20 kHz BW)
    Noise (NiPoS): –103 dBFS CCIR-RMS (measured at min. gain)
    Maximum input level: +8 dBu (without pad)

    Line Outputs 1 & 2
    Maximum Output Level (0 dBFS)
    +16 dBu, balanced
    THD+N: -99 dB (1 kHz, –1dBFS, 20 kHz BW)

    Weight and Dimensions
    Weight: 3.6 lb. (1.64Kg)
    Height: 2.6” (66 mm)
    Width: 8.94” (227 mm)
    Depth: 7.1” (180 mm)

All Focusrite products are built to the highest standards and should provide reliable performance for many years, subject to reasonable care, use, transportation and storage.

In the event of a Manufacturing Defect becoming evident within 12 months from date of purchase Focusrite undertakes that the product will be repaired or replaced free of charge if the product is returned to the authorised dealer from whom it was purchased. In these circumstances, or if you need an out-of-warranty repair to your Focusrite product, please contact your local Focusrite distributor in your country of residence or business : Find your local distributor here and you will be advised of the correct return procedure.

Alternatively contact the Focusrite Reseller from which you purchased the product. If you purchase a Focusrite product outside your country of residence or business you will not be entitled to ask your local Focusrite Distributor to honour this Limited Warranty, although you may request a chargeable repair.

Alternatively, the unit may be returned at your cost to the dealer you purchased the unit from so that they can organise a Warranty repair with their Focusrite Distributor.

This Warranty does not include cost of shipping to and from the authorised dealer from whom it was purchased. In every case it will be necessary to provide the original invoice or store receipt to accompany the defective product to the supplying dealer. This Limited Warranty is offered solely to the first purchaser of the product from an Authorised Focusrite Reseller (defined as a reseller which has purchased the Product directly from Focusrite Audio Engineering Ltd. in the UK or its Authorised Distributors outside the U.K,) and is not transferable.

This Warranty is in addition to your Statutory Rights in the country of purchase.

Please note: A Manufacturing Defect is defined as a defect in the performance of the product which may be expected from a reasonable interpretation of the published description and performance specifications as published by Focusrite Audio Engineering Ltd. This does not include damage caused by post-purchase transportation, storage or careless handling, nor damage caused by misuse.

A significant proportion of products returned under Warranty (which are very few in number compared to numbers sold) are found not to exhibit any fault at all. Please check that the mains voltage is correctly set for your local supply and that your connecting cables are in good order and correctly connected.

If in doubt about the product functions please read the user guide and if necessary contact your dealer for advice before returning the product to the supplying dealer. You can also contact the Focusrite Tech Support team at the Focusrite Answerbase for general advice.

Pro Coverage gives you added warranty protection for your new gear. Stepping in where the manufacturer's "normal wear and tear" coverage ends, our Pro Coverage program offers you upgraded coverage if your product ever fails Read More.

Pro Coverage includes
  • Accidental damage protection (new gear only)
  • Expedited repair
  • Free shipping (for returns or repairs)
  • 100% coverage for commercial use
  • Extended return period
  • Extended price protection
  • No lemon guarantee
  • Free transfer of coverage to a new owner
  • Repair costs covered for up to three years from date of purchase
  • Repair authorization-toll-free by phone or via the web
  • Customer Reviews

Review Snapshot

by PowerReviews
FocusriteScarlett 18i8 (2nd Gen) USB Audio Interface

(based on 3 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.


No Pros


No Cons

Best Uses

  • Home studio (3)

Reviewed by 3 customers

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Yes - I would buy the Scarlett I1181 again



About Me Professional Musician


  • Clear Sound
  • Durable
  • Easy To Use
  • Lightweight
  • Versatile


    Best Uses

    • Home Studio
    • Professional Recording

    Comments about Focusrite Scarlett 18i8 (2nd Gen) USB Audio Interface:

    I produced an album on my IMack using the Scarlett I181 interface. I am not at all technical by nature but the I181 was very easy to learn. And the album "Trucks to Trains" by Paul Click came out great.

    (0 of 1 customers found this review helpful)


    Stay away from Focusrite USB interfaces

    By Jeff

    from Cleveland, OH

    About Me Professional Musician



      • Buggy software & drivers
      • Unreliable

      Best Uses

      • Home Studio

      Comments about Focusrite Scarlett 18i8 (2nd Gen) USB Audio Interface:

      Stupidly purchased this 18i8 2nd gen to replace an 18i6 that completely died. I liked the features offered by the 18i8 so I went for it. Right out of the box, my audio system had trouble recognizing the interface. I was able to find a "beta driver" on a hidden Focusrite website that allowed Windows to see the interface, but the Focusrite Control software (necessary for setting up monitoring, etc.) will still not see the interface. I have messaged Focusrite support via email and Facebook with no response, going on a week now. I plan on returning this unit in favor of something with a better track record of driver compatibility and support, probably MOTU.

      (0 of 1 customers found this review helpful)


      Almost No-Latency and Zero-Noise. Works with Linux too!

      By BlueTooth_Avenger

      from Gainesville, Fl

      About Me Novice

      Verified Buyer


      • Clear Sound
      • Compact
      • Durable
      • Easy To Use
      • Great Focusrite Support
      • Lightweight
      • Versatile


      • Had To Call Support Once

      Best Uses

      • Amateur Recording
      • Home Studio

      Comments about Focusrite Scarlett 18i8 (2nd Gen) USB Audio Interface:

      I bought this to upgrade from a MAudio MTrack that I had been using for years. The MTrack was useful but I needed more inputs and frankly, it was a brat to connect to Ardour under Linux. I scoured the internet seeking a modern replacement that featured seamless integration with Linux drivers and had the latest no-latency, no-noise hardware voodoo. Included DAW software was a secondary consideration and yes, I run Windows 10 too but using Ardour under Ubuntu Studio has always been my never-obsolete DAW solution.

      At the time of purchase, the Focusrite Scarlett 18i8 met the primary requirements that I mentioned above. GuitarCenter made my decision easier by including a 15 percent GuitarCenter bucks promotion with the product. I have yet to receive the bucks as the promotion included a delay clause, but I am sure it will be honored as all my previous dealings with GuitarCenter have been exemplary. So, I bought the Focusrite on-line and had it mailed to me as my local store did not stock it. That required creating a GuitarCenter on-line account that I have used several times since. My order shipped quickly through UPS and arrived without incident.

      I have connected the 18i8 to both of my computers... one running Windows 10 and the other Ubuntu Studio. The computers are identical with quad-core Intel® Core™2 Duo CPUs and 8 GB of RAM. I multiplex the 18i8 into the machines with an auto-sensing USB switch and I have installed the included Ableton 9 Lite DAW onto the Windows machine. I am impressed with the performance of the 18i8 on both installations. No noise and negligible latency... especially when using the 18i8 Direct Monitoring feature.

      Am I satisfied? Yes, with qualifications. Since purchasing the 18i8 I have become intrigued with a competing product that didn't exist at the time that features wireless connectivity and more channels. I have also experienced one shutdown incident that was quickly solved by Focusrite support and was not entirely the 18i8's fault.

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