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.

The next generation of GuitarJacks is now available: GuitarJack Stage and StudioJack Mini.




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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