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BIAS X review

#4 of 35 in Guitar Amp SoftwareAI Instrument Generators

A broad guitar rig for AI-assisted tone creation, routing, and DAW workflows.

9.0/10Editor score
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BIAS X9.0 Visit Positive Grid

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

BIAS X is Positive Grid’s desktop guitar multi-effects software and plugin for creating, matching, and shaping guitar tones. It suits guitarists, producers, and recording users who want amp, cabinet, effect, and routing options in one application. The software can run standalone without a DAW or operate inside compatible music-production software through AU, VST3, and AAX plugin formats.

Its feature set is broad for tone design. BIAS X includes 33 amp models, 25 cabinet models, and 63 effects, with dual-amp, stereo, and parallel signal chains for more involved rigs. Third-party impulse-response loading adds another cabinet option, while MIDI controller support can connect the software to a hardware-based performance workflow. Text-to-Tone creates tones from written descriptions, and Music-to-Tone analyzes audio to create presets. These AI features give BIAS X a distinct focus beyond conventional amp and effects modeling.

Platform fit is practical for desktop recording and live setups: BIAS X runs on macOS and Windows and integrates with Ableton Live, GarageBand, Logic Pro, Cubase, Pro Tools, REAPER, Reason, and Studio One. The trade-off is its paid-only structure. The published plan is a $149 one-time purchase, with no free plan, so it is less accessible for users who want to begin with a no-cost tier. Choose BIAS X if AI-assisted tone creation, extensive effects, impulse-response loading, and flexible routing are priorities. Users seeking free entry or a simpler, narrower guitar plugin may prefer a different option.

BIAS X pros and cons

  • Where it wins
    • 33 amps, 25 cabinets, and 63 effects
    • Dual-amp, stereo, and parallel signal-chain routing
    • Text-to-Tone and Music-to-Tone AI tools
  • Where it doesn't
    • No free plan is available
    • The one-time price is $149
    • Desktop support is limited to macOS and Windows

BIAS X fact sheet, pricing and score →

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