Amp Match Modeler

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BIAS Desktop

Celebrate BIAS FX launch: $99.00 -> $74.00

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  • 36 authentic amp models to get started.
  • Complete BIAS amp design modules for customization.
  • Download thousands of amp models from ToneCloud.
  • Sync with BIAS iPad and iPhone.

    BIAS Professional

    Celebrate BIAS FX launch: $199.00 -> $174.00

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  • Everything from BIAS Desktop, plus:
  • Amp Match Technology to capture your tube amps.
  • Featured artists Amp Match presets download.
  • Glassy, Crunch & Insane Amp Expansion Packs.


    BIAS Desktop is the world’s most accurate, thorough and versatile guitar-amp modeler and designer. Its advanced amp-modeling engine captures the warmth and feel of real tube amps in every aspect, component by component.

    BIAS is fully customizable, easily create amp models by swapping out the tubes, preamp, transformer, tone stacks, cab and mic to create your own custom amps and unique signature sound.

    BIAS Overview by Ola Englund

    Tone Walkthrough by Steve Booke

    Amp Match your tube amps

    Accurately capture the sound of all your favorite tube amps.

    Amp Match Technology utilizes a collection of underlying technologies to analyze and compare your currently selected BIAS amp model and the sound of a target tube amplifier, its accompanying cabinet and the microphone used to capture its sound. It then executes the tonal compensation and enhancements needed to make your amp model’s sound accurately match that of the target tube amplifier.

    Sampling the world of tube amps.

    Fluff shows how he uses Amp Match Technology to capture his favorite tube amps.

    For the first time in history, guitar players can easily design, modify and capture the most unique, expressive and soulful tones, store them in the digital domain and recall them at any time for any recording application.

    Get amp profiles from ToneCloud®

    Download amp models from the cloud.

    Share and download artist- and user-designed and matched amps right inside Positive Grid’s ToneCloud®.

    The tone-creation possibilities are now virtually infinite with BIAS. Download artists’ signature amps, or try out the latest and most popular matched amp models created by your fellow guitarists.

    Positive Grid is currently working with session artists and engineers world-wide to create professional custom amp models and amp-matched models made from recordings in leading studios. Stay tuned, as more is coming.

    “BIAS Desktop represents an entirely new concept in guitar sound. Its engine has the most authentic tube sound. The stunning interface makes it possible for users to edit more deeply to create the tones that before they could only have imagined. Amp Match Technology allows users to capture their golden tube amplifier, then share that amp and download other amp models on ToneCloud. BIAS Desktop is like Spotify for amps!”

    – the Positive Grid team

    Featured Amp Match Profiles


    Ola Englund

    Ola RECTO Match

    Ola used BIAS Desktop Amp Match technology to get the same exact tone as his classic Mesa Boogie Dual Rectifier used in his studio. The process was professionally engineered by Ola himself to reproduce the same audio quality he gets when recording albums. Beware.

    The amp:
    • Mesa Boogie Dual Rectifier 95
    The cab:
    • Randall 4×12 ISO with Celestion Vintage 30
    • Cab mic’d with Shure SM-57


    Mark Holcomb

    Haunted S’mores

    Mark Holcomb, mastermind of some of the best tunes by Periphery, has finally made it possible for you to get the same amp tones he uses live and in the studio. Professionally engineered by the Positive Grid Team, Mark’s amp match preset captures a huge distorted tone while maintaining clarity, perfect for both palm muting and open string riffing.


    Rusty Cooley

    RC Bogner | RC VHT | RC Dominion

    Rusty Cooley is one of the most praised shredders in the business. His blazing leads are characterized for having a good amount of distortion while maintaining every picked note perfectly clear and recognizable. Rusty amp matched his Bogner Uberschall with the same cab, mic, and overall setup he uses in the studio and on tour with Day Of Reckoning. The process was professionally engineered by the Positive Grid team.

    The amp:
    • Bogner Uberschall
    The cab:
    • 4×12 recto cab with v-30s
    • Cabs mic’d with Shure SM-57


    Fastback Studios

    Fastback British 10W | Fastback Cobra 100W | Fastback Clean Tweed | Fastback Brit Glass 22W | Fastback Blackface | Fastback HI Lead – Fastback Treadplate – Fastback Super Lead

    Located in Seattle, Fastback Studios have worked with artists such as Jeff Loomis, 7 Horns 7 Eyes, and Reggie Watts. The “Fastback Studio Amp Collection” offers 8 breathtaking vintage and modern amp match presets, from a crips clear Tweed amp to a heavily distorted Treadplate, to everything in between. All the presets were professionally created and engineered by Fastback Studios’s Mark Naron and Jason Lackie.

    The amps:
    • Vox AC30 – Blackface Fender – ’59 Bassman / JTM 45 – ’68 Plexi – ’72 Super Lead.
    The cabs:
    • Custom Fastback 2×12 w/ Celestion Creamback G12H-75 – 1969 Marshall 4×12 with Pre-Rola Speakers – Hiwatt 4×12 with Fane speakers – 1×12 Jensen Combo speaker – combo 4×10 Jensen Alnico
    • All cabs mic’d with Shure SM57


    Ryan Bruce “Fluff”

    “Fluff AM” (all 10 presets)

    Ryan matched 5 of his best amps including the stunning Mesa Boogie Mark V, a legendary Carvin Legacy, two of the most sought-after 90’s Mesa Boogies, and a hand-built Plexi with modded Marshall components. All the amp matching process was done in his professional home studio in Puyallup, Washington. Ready to rock?

    The amps:
    • Mesa Boogie Mark V • Carvin Legacy • ReVolt PlexiNstein 800 • Modded 1995 Mesa Boogie Rectifier • 1991 Mesa Boogie 50 Cal+
    The cab:
    • Custom Kracke Amps 2×12 with Celestion Creambacks
    • Cab mic’d with with Audio-Technica ATM250DE into a Presonus Studio Channel mic pre.


    Ludovico Reale

    Marshall M4 Clean | Marshall M4 High Gain | Marshall M4 DS1 | Marshall M4 DS2

    Need more power? Ludovico matched his fully fledged Marshall Mode Four with BIAS Desktop to get both clean and high gain tones right in his DAW. Now you can download his presets and have the classic Marshall tone with just one click.

    The amp:
    • Marshall Mode Four 400
    The cab:
    • 4×12 Marshall Mode Four 400 A 400w rms. Su 8 ohm.


    Vali Caceres

    Clean Vali DeVille | Dirty Vali DeVille | Clean Vali Rectifier | Dirt Vali Rectifier

    One thing Vali Caceres knows is about tone. Having played alongside Joe Satriani and Paul Gilbert, he has already been making a splash of his own. Vali recreated the exact same tone from his classic Fender Hot Rod DeVille for a bright and crisp clean tones, and a Mesa Boogie Dual Rectifier for dirty, high gain tones.

    The amps:
    • Fender Hot Rod DeVille • Mesa Dual Rectifier
    The cab:
    • Amp cab mic’d with AKG 414 and Shure SM57


    Robert Baker

    TH-30 CRB | TH-30 HG RB | TH-30 RB

    With over a million views on YouTube, Robert is one of the hardest-working musician on the business. Robert recreated his coveted Orange TH30 head with BIAS Desktop and got the amp’s same exact tone, warmth, and feel. Download his amp matched presets now and feel the power of the real thing!

    The amp:
    • Orange TH-30
    The cab:
    • Orange 2×12 with Celestion V30’s • Cab mic’d with Shure SM-57 (off-axis)



    Boogie Clean | Boogie Blues | Boogie Lead | Boogie Match | Boogie Match 2

    Daddo is the 1st place winner of on-line guitar contest Premier Guitar Challenge hosted by Broadjam and Premier Guitar magazine. Daddo has been chosen among thousands of guitar players to be the top guitarist in the electric guitar category with his instrumental The Temple. Daddo used BIAS Desktop to amp match his trusty Mesa Boogie Triple Rectifier to create both pristine clean and heavy distorted tones.

    The amp:
    • Mesa Boogie Triple Rectifier
    The cab:
    • Cab mic’d with Joe Satriani signature CAD microphone.


    Jack Thammarat

    JT IRT Drive

    Guitar sensation Jack Thammarat is the winner of Guitar Idol 2009 competition and one of the most sought-after modern fusion guitarists. He used BIAS Desktop to amp match his trusty Laney Ironheart to capture his warm yet clear signature lead tones.

    The amps:
    • Laney IronHeart
    The cab:
    • Laney LT212
    • Celestion Greenback speaker and Shure SM57 Microphone.


    Diego Budicin

    Diego Budicin CLEAN | Diego Budicin Laney

    Diego Budicin is a young talent from Italy that has played alongside Steve Vai and many others. Diego amp matched his powerful Laney VH100 amp with BIAS Desktop using a T-Case Isobox for even more tone depth.

    The amp:
    • Laney VH100
    The cab:
    • T-Case Isobox “2XISO” mic’d with Shure SM-57


    Steve Booke

    SB Marshall 2550

    Steve Booke is a composer and guitarist known for his lesson column on Guitar World magazine online called “What in the World”. Steve amp matched his coveted 1987 Marshall 25/50 Jubilee through a Soldano 2×12 cab. Get this classic 80’s tone right in your Mac and PC!

    The amp:
    • 1987 Marshall 25/50 Jubilee Combo
    The cab:
    • Solado 2×12 cab with 25watt with 1 Celestion Greenback and 1 Celestion V30
    • Cab mic’d with Sennheiser 421

    What the pros are saying

    “BIAS Desktop lets you create your guitar tone from the ground up, enabling you to personalize the sound you’re searching for. Another great feature is being able to share and download your signature sounds with ToneCloud. This is really killer software for every demanding guitarist out there.”

    -Jeff Loomis-

    “Gorgeous design. Excellent guitar tone. Insane depth of tweakability. Amp Match is really clever. Good online integration with ToneCloud.”

    -Hollin Jones – AskAudio Magazine-

    “BIAS Desktop is a killer plug-in”

    -Russ Hughes – Pro Tools Expert-

    Tutorial Videos

    BIAS Desktop Complete Tutorial

    Amp Matching Tutorial

    Hear it now



    • The most accurate, thorough and versatile amp modeling software available in the world
    • 36 HD amp models included with the introductory release
    • Amp Match Technology captures any miked amp or recorded track and creates a matched model
    • Share and download thousands of matched amp models created by signature artists and your fellow guitarists on ToneCloud
    • Fully customizable preamps, tone stacks, power amps, transformers, cabinets and mic selection and placement—mix and match!
    • Customize the look and feel of your own amp panel; change the name, tolex, panel and knobs.
    • Works the way guitarists think: tweak gain and overdrive, swap out tubes and transformers, change the cabinet and mic position, and shape the tone with different tone stacks and two 8-band equalizers
    • Included noise gate and room simulator
    • Create a virtually unlimited number of custom amps
    • Quick preset facility recalls each of your 8 favorite settings in turn with just one mouse click


    • OS X 10.7 or later
    • Audio Units, VST, RTAS, AAX Native
    • 4GB of RAM minimal, 8GB or more recommended
    • 700MB free disk space
    • BIAS Desktop requires A DAW software (Digital Audio Workstation) to host, it doesn’t have a Standalone version at this moment.
    • Internet connection is required to activate license and access Tone Cloud, BIAS doesn’t support offline activation at this moment. It can run under offline mode after activation and disable Tone Cloud.


    • Windows 7 (SP1) or Windows 8
    • VST, RTAS, AAX Native
    • 4GB of RAM minimal, 8GB or more recommended
    • 1.5GHz Dual core processor minimal, 2.0GHz Dual core or more recommended
    • 250MB free disk space for per version (32 or 64 bits)
    • BIAS Desktop requires A DAW software (Digital Audio Workstation) to host, it doesn’t have a Standalone version at this moment.
    • Internet connection is required to activate license and access Tone Cloud, BIAS doesn’t support offline activation at this moment. It can run under offline mode after activation and disable Tone Cloud.

    Support Host

    Host Requirements
    Ableton Live 8.0 or above
    Avid Pro Tools 10 or above
    Ardour 3.0 or above
    Apple Logic Pro 9.0 or above
    Apple GarageBand 6.0.5, 10.0 or above
    Bitwig Studio 1.0 and above
    Cakewalk Sonar X2 or above
    Cockos Reaper 3.4 or above
    Harrison Mixbus 2.0 or above
    Steinberg Cubase 5.0 or above
    Steinberg Nuendo 4.3 or above
    MuTools MuLab 6.0 or above
    PreSonus Studio One Producer/Professional 2 or above