GuitarJack 2 USB Studio Quality I/O for Mac, PC and Mobile Devices

GuitarJack 2 USB guitar, instrument and microphone interface for Mac, PC and mobile devices
GuitarJack 2 USB connects instruments and microphones to Mac, PC and select mobile devices via 1/4 inch instrument and 1/8 inch stereo mic/line inputs. 1/8 inch stereo line/headphone output offers increased drive for headphones.

About GuitarJack 2 USB

GuitarJack 2 USB portable audio I/O connects instruments, microphones headphones and more to your PC, Mac and select mobile devices. Featuring a 1/4 inch instrument input and a 1/8 inch stereo mic/line input and a pristine sounding 24-bit AD/DA converter. With rugged aluminum construction and premium components, GuitarJack 2 USB is the highest quality portable audio interface. Product finish will be brushed instead of polished as shown in these images.
Buy GuitarJack 2 USB for Mac/Win/iPad and select mobile devices.

Important: Differences between GuitarJack 2 USB and GuitarJack Model 2.


  • Studio quality sound from a 24-bit A/D and D/A converter with analog front end and digital circuitry designed by renowned audio designer, Joe Bryan, famous for his work on the UA 2192
  • 1/4 inch (6.5 mm) instrument input - nickel-plated, solid brass Switchcraft (10,000 MTBF) jack (records one input at a time)*
  • 1/8 inch (3.5 mm) stereo mic/line input - (no phantom power is provided) (records one input at a time)*
  • 1/8 inch (3.5 mm) stereo headphone/line output with increased drive for headphones provides incredible sound quality
  • Micro USB connector (micro USB to USB cable included)
  • Sleek and rugged aluminum shell
  • Device powered for ultimate portability - requires no batteries or power adapter
  • Input Modes:
    • Instrument (1/4 inch) - mono Hi-Z
    • Mic/Line (1/8 inch) - mono or stereo

What Can You Do with GuitarJack 2 USB?

  • Connect a guitar, bass, keyboard, microphone, and other audio hardware to the Mac, PC, iPad or iPhone 5 via 1/4 inch instrument or 1/8 inch stereo mic/line inputs.
  • Record in mono or stereo.
  • Jam to the GuitarTone amps and effects app and the song tool in FourTrack and StudioTrack. Also works well with most third party audio apps like GarageBand.
  • Listen to music using the stereo output on GuitarJack 2 USB, which features increased drive for headphones. Even your iTunes library will sound better through GuitarJack!

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GuitarJack 2 USB Images


Answers to these questions and more in the GuitarJack 2 USB FAQ:


Made in the U.S.A.

GuitarJack Made in America Details


$129 ($199 MSRP)
While GuitarJack 2 USB is currently out of stock in Sonoma's store, it is available in limited quantities through select dealers worldwide. More information about Sonoma's new generation of GuitarJacks (GuitarJack Stage, StudioJack Mini, and GuitarJack Mini) is coming soon. Subscribe to announcements about these products here.




Tech Specs

Line/Headphone Output

  • One 1/8" (3.5mm) stereo unbalanced output
  • Continuously variable gain
  • Responds to iPod volume up/down buttons
  • Specifications:
    • Maximum output level (into 32ohms): 1.00Vrms (63mW)
    • Maximum output level (into 10kohms): 1.00Vrms (+2.2dBu)
    • Frequency response (20Hz to 20kHz): +0.05/-0.40dB
    • Noise level (RMS, A-weighted): -97dB
    • Dynamic range (RMS, A-weighted): 96dB
    • THD (600mVrms into 10kohms): 0.0020% (-94dB)
    • THD (0dBV into 10kohms): 0.0036% (-89dB)
    • THD (0dBV into 32ohms): 0.026%
    • Stereo crosstalk (100Hz to 10kHz): -88dB

Line/Mic Inputs:

  • One 1/8" (3.5mm) stereo unbalanced input
  • Recording Rates: 44.1k and 48k depending on the app recording rate
  • Continuously variable gain
  • Specifications:
    • Minimum input impedance: 4.7kohm
    • Maximum input level (pad on, line-input): 6.5Vrms (+18dBu)
    • Minimum input level (boost on, full scale mic): 7.5mVrms (-40dBu)
    • Frequency response (40Hz to 20kHz): +0.06/-0.65dB
    • Noise level (RMS, A-weighted): -96dB
    • Dynamic range (RMS, A-weighted): 96dB
    • THD (-3dBFS): 0.008% (-82dB)
    • Stereo crosstalk (1kHz): -96dB
    • EIN (equivalent input noise, 20kHz BW, 150 ohms): -115dBu
    • Latency - see FAQ

Instrument Input:

  • One 1/4" (6.5mm) mono unbalanced input
  • Recording Rates: 44.1k and 48k depending on the app recording rate
  • Automatic detection of instruments
  • Continuously variable gain
  • Specifications:
    • Input impedance: 470kohm
    • Maximum instrument input level (Hi-Z, 1% THD): 700mVrms
    • Maximum instrument input level (Hi-Z, 10% THD): 1.5Vrms
    • Maximum instrument input level (Hi-Z, 20% THD): 2.5Vrms

Device connection

  • Micro USB-B Connector

Dimensions (std/metric)

  • Length 2.55"/64.8mm
  • Width 2.30"/58.5mm
  • Height 0.61"/15.6mm
  • Weight 2.25oz/65g


  • Case
    • 6061 Aluminum
    • Black nickel plated with stainless steel side panels
    • Laser etched logo
  • 1/4" connector
    • Switchcraft
    • Nickel plated Brass
    • 10,000 insertion MTBF (with switchcraft plug)
  • Electronics
    • RoHS certified components

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