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Line 6 TonePort KB37 USB Audio Interface and MIDI Controller  

Product #246510

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Item Note:

This product has been discontinued but may be available as a Open Box item.

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See All Line 6 MIDI Keyboard Controllers
Line 6

Line 6 guitar and vocal recording that lets you easily add keyboard parts.

The Line 6 TonePort KB37 is from the award-winning TonePort family of USB recording and modeling audio interfaces from Line 6. With it you can record your guitar and vocals with renowned Line 6 sound and add a few choice keyboard parts to top off your compositions. The TonePort KB37 gives you 37 full-sized synth-action keys, pitch/mod wheels, assignable transport controls, an expression pedal input, and the same dual footswitch jacks as the UX2 for control of effect on/off, tone select, tap tempo, and other parameters as well as sustain, start/stop, and punch in for your MIDI/music recording software.

18 guitar and five bass amp/cab models; 30 stompbox and studio effects; and six high-end studio microphone preamp models deliver professional Line 6 sound to all your recordings. You can record through two mic inputs (with 48V phantom power), a guitar/bass input, and stereo line inputs. Other I/O includes a S/PDIF out, TRS line outputs, TRS monitor input, and independent headphone jack. It also gives you assignable VU meters and selectable 16- or 24-bit recording at 44.1, 48, or 96kHz. A real breakthrough is the Tone Direct™ monitoring, which lets you hear the signal with full Line 6 processing and zero latency. And all of it is now compatible with Macintoshes as well as PCs.


TonePort KB37 Hardware Specs:
  • 37-note full-sized keyboard
  • Pitch and mod wheels
  • Assignable transport controls
  • Expression pedal input
  • Dual footswitch jacks
  • 18 guitar and 5 bass amp/cab models
  • 30 stompbox and studio effects
  • 6 high-end studio microphone preamp models
  • 2 mic inputs with 48V phantom power
  • Guitar/bass input with pad
  • Stereo line inputs
  • S/PDIF digital output
  • Line outputs via balanced 1/4"
  • Monitor input via stereo 1/4" jack
  • Headphone jack with dedicated volume knob
  • Assignable VU meters
  • Tone Direct monitoring
  • 16- or 24-bit recording at 44.1, 48kHz
  • 96kHz mode with built-in sample-rate conversion for simultaneous input and output
  • Mac and PC compatible

TonePort KB37 USB Audio Interface and MIDI Controller Specifications:

GearBox Modeling SoftwareSpecs
    Guitar Amp Models from PODxt
    • Small Tweed (based on* "Wide Panel" Fender Deluxe Reverb)
    • Tweed B-Man (based on* Fender® Bassman)
    • Blackface 'Lux (based on* Fender® Deluxe Reverb)
    • Class A-30 Top Boost (based on* Vox AC-30)
    • Plexi Lead (based on* Marshall Super Lead)
    • Plexi Jump Lead (based on* Marshall Super Lead with "jumped" channels)
    • Jazz Clean (based on* Roland JC-120)
    • Brit J-800 (based on* Marshall JCM-800)
    • Solo 100 Head (based on* Soldano SLO-100)
    • Treadplate (based on* Mesa/Boogie Dual Rectifier)
    • Tube Instrument Preamp
    • Line 6 Treadplate
    • Line 6 Insane
    • Line 6 Spinal Puppet
    • Line 6 Chemical X
    • Line 6 Piezacoustic 2
    Bass Amp Models from Bass PODxt
    • Rock Classic (based on* Ampeg SVT)
    • Flip Top (based on* Ampeg B-15A)
    • Adam and Eve (based on* Eden Traveler WT-300)
    • Silverface Bass (based on* 1967 Fender Bassman Head)
    • Eighties (based on* Gallien Kruger 800RB)
    Stompbox and Studio Effects
    • Facial Fuzz (based on* Fuzz Face)
    • Fuzz PI (Based on* Big Muff Pi)
    • Screamer (based on Tube Screamer)
    • Classic Distortion (based on* ProCo Rat)
    • Vetta Comp
    • Line 6 Sine Chorus
    • Line 6 Flanger
    • Phaser (based on* MXR Phase 90)
    • U-Vibe (based on* Uni-Vibe)
    • Opto Tremolo (based on* 1965 Fender Deluxe Reverb®)
    • Rotary Drum & Horn (based on* Leslie 145)
    • Analog Delay Modulation (based on* Deluxe Memory Man)
    • Tube Echo (base on* EP-1 Tube Echoplex)
    • Line 6 Digital Delay
    • Standard Spring Reverb
    • Brite Room Reverb
    • Medium Hall Reverb
    • Cavernous Reverb
    • Slap Plate Reverb
    • Wah (based on* Vox Wah)
    • Volume (Pre- or Post-Amp Routing options)
    • Compressor (based on* LA-2A Compressor)
    • Noise Gate
    • Female De-Esser
    • Male De-Esser
    GearBox Exclusive Vocal Preamp Models:
    • American Classic (Inspired by* an API lunch box preamp) in a classic studio setup:
    • API 512c Mic Pre
    • API 550b EQ
    • Studer 2-inch tape (Including Emphasis/De-emphasis & tape Soft Clip)
    • This model gives you classic rock tone that's focused and a bit compressed through soft distortion. It even includes the treasured tonality and saturation you'd get when recording to classic 24-track analog tape! Good for transients and maintaining a leveled vocal.
    • Vintage UK Inspired by* a Neve 1073
    • Warm with mild distortion when pushed. Vintage UK handles transients very well and is great for vocal tracking. Extended bass range also makes it great for direct bass and drum work.
    • Modern (Inspired by* an Avalon Vt737)
    • This modern must-have has a clean, bright, and non-compressed sound with soft transients.
    • Console (Solid State Console Mic Pre Design)
    • Has a flat frequency response that's clean with no artifacts or colorization. A great choice for tracking line level instruments like a keyboard.
    • Vintage (Inspired by* a Classic Vintage Tube Preamp setup) consisting of:
    • Requisite Y7 Mic Pre
    • API 550b EQ
    • Studer 2-inch tape (Including Emphasis/De-emphasis & tape Soft Clip)
    • This model yields vintage Motown, Memphis, Nashville, and early rock sounds.
    • Lo-Fi
    • Has a small speaker sound that's slightly distorted. Great for adding an overdriven vocal to a track.
    • * All product names used in this document are trademarks of their respective owners, which are in no way associated or affiliated with Line 6. These trademarks of other manufacturers are used solely to identify the products of those manufacturers whose tones and sounds were studied during Line 6 sound model development.
    review resources


    by PowerReviews

    (based on 3 reviews)

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    Reviewed by 3 customers

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    (1 of 1 customers found this review helpful)


    Amzingly Versatile Audio Interface


    from Utah

    I've owned the KB37 for about a year now. I use it with my laptop when I'm out of my studio doing projects on the road. I use it with Sony Acid 6.0 and Reason 4.0 . It has worked flawlessly the entire time. All of the interface and controller options on this little device are truly amazing. The drivers work so well with Windows XP that I use it as my main audio output for everything in windows. I just connect my speakers to the output or listen to headphones while working in Windows. Another thing that amazes me is how little latency there is during recording. I've done a 16-track project using this interface with Acid 6.0 and there was no latency when recording my guitar and bass parts at all. The interface is plastic but that makes it light and easy to take with me wherever I go. I've been %100 satisfied with is since I've owned it and I highly recommend the TonePort KB37.

    (13 of 25 customers found this review helpful)


    Buyer beware


    from Ohio

    This will not work with all computer chipsets, especially new ones. Worst of all is that you cannot get anyone from line 6 on the phone, and messages to "customer service" are ignored!! Unbelievable, I sent mine back in a hurry.

    (37 of 66 customers found this review helpful)


    Perfect Starting Point for a Home Recording Studio


    from MI

    I'd been waiting to buy the right audio interface for my computer to start my home recording studio. Line 6 has made the perfect package with the KB37. I love the fact that it's a midi keyboard & audio UI for my computer. What makes it a perfect package is that I can stay up and lay down a bunch of tracks using the effects software with my recording software, and not make a sound. No amps need with their software.

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