BIAS X is an advanced, AI-powered guitar multi-effects platform that lets you create tones by describing the sound you want.
With tools like Text-to-Tone and Music-to-Tone, you can build or match guitar tones instantly—just by typing a prompt or uploading a recording. Powered by a new AI-driven tone engine, BIAS X delivers unmatched realism, flexibility, and creative control.
BIAS X
£139
AI-powered multi-
dimensional sound engine.
Guitar tones with unprecedented realism, responsiveness, and inspiration—transforming your playing through tone that finally feels right.
Experience tone that feels alive.
BIAS X delivers guitar tone with realism, responsiveness, and inspiration. It feels like you're playing through a dialed-in tube amp in a pro studio—because our AI-powered engine doesn't just simulate tone, it reacts to your playing like the real thing.
Amplifiers
ADVANCED AI-POWERED MODELING
BIAS X uses advanced multi-point Agentic DSP to replicate the touch sensitivity and dynamic behavior of real tube amplifiers. With 33 models, each amp responds to your playing—cleaning up when you play softly and saturating with harmonics when you dig in.
You’ll feel it.
From shimmering cleans to high-gain punch: notes bloom naturally, chords sound full, and dynamics translate perfectly. You’re not fighting your gear—you’re flowing with it.
Adaptive Circuit Modeling
Feels alive under your fingers—responding to pick attack, playing dynamics, and volume changes like a real tube amp, giving you the expressive range to convey every emotion.
Bias-Point Shifting
Creates that sweet spot where notes bloom and sustain naturally. Experience the warmth, sag, and harmonic richness that makes vintage amps so inspiring to play.
Dynamic EQ Response
EQ controls that respond musically like real amps—less clinical, more inspirational. Cut through a mix perfectly with tone controls that interact naturally with your playing.
Harmonic Fingerprinting
Each amp model has a unique harmonic signature derived from its physical counterpart, preserving the subtle tonal qualities that define classic tone.
Transient Accuracy
Captures the micro-details of attack and decay that define an amp's feel, from the immediate response of a Blackface clean to the compressed attack of a high-gain British head.
Power Amp Saturation
Accurately simulates how power tubes compress and distort when pushed, creating the rich, three-dimensional saturation that's missing from simpler modeling approaches.
Hear BIAS X in action.
Experience the dynamic response and harmonic complexity that make our models feel like real tube amplifiers.
Effects
AI-ENHANCED PRECISION
Our 63 effects utilize component-level circuit modeling to deliver the organic, responsive behavior that makes vintage analog gear special. Advanced circuit analysis accurately models how components interact, creating effects that respond dynamically to your playing.
You'll hear it.
Each effect undergoes a rigorous 20-step calibration process overseen by professional producers. You'll hear and feel the difference immediately—tape echoes that saturate naturally with authentic frequency degradation, compressors that model the behavior of optical, FET, and VCA circuits, and overdrives with the precise harmonic complexity of rare boutique pedals.
Dynamic Distortion
Overdrive pedals that clean up when you roll back your volume and saturate beautifully when pushed.
Modeled Component Interaction
Get the magic of vintage pedals where components interact to create sounds that range from subtle warmth to creative chaos.
Adaptive EQ Curves
Tone controls that feel musical and intuitive—turning knobs results in useful sounds throughout their range, not just at specific sweet spots.
Analog Noise Modeling
Subtle, musical noise characteristics are preserved where appropriate, while unwanted noise can be easily eliminated.
Temporal Response
Time-based effects like delays and reverbs capture the character of analog and vintage digital units—from clear transients to smooth, natural decay.
Input/Output Saturation
Effects simulate the subtle compression and harmonic enhancement that occurs at input and output stages of classic gear.
Cabinets
3D CABINET MODELING
Our cabinet models deliver the three-dimensional sound of professionally mic'd speaker cabinets. Going far beyond traditional static IRs, BIAS X employs advanced DSP to model the dynamic physical behavior of real speakers—from cone excursion to power compression.
Cabinet Masters
We partnered with an industry leader in studio-grade impulse responses - Spectre Digital - to bring some of the best, most sought-after cabinets to BIAS X. Unlock brand new meticulously captured cabs to shape your tone.
Immersive Sound
Hear your guitar in three dimensions—with depth, space, and presence that flat IRs can't deliver.
Dynamic Cone Behavior
Feel how bass notes tighten up when you dig in and high notes shimmer with harmonics. Get that natural compression that makes recorded guitars sit perfectly in a mix.
Microphone Modeling
Access the sound of expensive vintage microphones perfectly placed by a seasoned engineer for studio-quality tone.
Intermodulation Effects
Experience the massive wall-of-sound effect that comes from multiple speakers working together. Get the complexity and harmonic richness that makes 4x12 cabinets legendary.
Volume-Dependent Resonance
Feel how cabinets behave differently at various volumes—from tight and focused at lower levels to harmonically rich and resonant when pushed hard.
Spectre Digital Cabinets
Industry-leading IRs that add depth, character, and speaker realism to your tone—captured by the experts at Spectre Digital.
Signal Chain
& Control
EFFORTLESS CONTROL, INFINITE FLEXIBILITY
BIAS X delivers pro-level tone design through a clean, intuitive interface—built for speed, freedom, and precision. Whether you’re sculpting subtle textures or unleashing layered sonic chaos, the redesigned workflow keeps your creativity front and center.
Dual Signal Chains
Split your signal and process it in two parallel paths—each with its own effects. Stack or pan them for wide, layered, or contrasting tones.
Drag-and-Drop Workflow
Rearrange amps, cabs, and effects visually and instantly—build your chain in seconds.
Streamlined Preset Manager
Organize, and recall tones fast with an overhauled interface built for clarity.
Flexible Routing Matrix
Experiment with parallel paths, stereo splits, and creative FX placement. Turn on the global Doubler effect to double your signal for added width.
Smooth Real-Time Control
BIAS X offers an intuitive, easy-to-use signal path interface. Move components horizontally or toggle them vertically to adjust gear placement on the fly.
Revamped Gear Browser
Browse, compare, and swap gear with a faster, more intuitive experience.
Keep exploring.
SPECS
SYSTEM REQUIREMENTS
Minimum Requirements (Mac)
- macOS 11.7
- 8th-generation Intel Core i5
- 8GB of RAM
- Audio Plugin Formats: Audio Units, VST 3, AAX Native
- 1GB of available storage space
An Internet connection is required to activate a user license. BIAS X does not support offline activation. Offline mode is available after software activation.
Recommended Requirements (Mac)
- macOS 11.7
- Apple Silicon
- Audio Plugin Formats: Audio Units, VST 3, AAX Native
- 1GB of available storage space
An Internet connection is required to activate a user license. BIAS X does not support offline activation. Offline mode is available after software activation.
Minimum Requirements (Windows)
- Windows 10 (22H2)
- Intel® Core i5 Processor
- 8GB of RAM
- Audio Plugin Formats: VST 3, AAX Native
- 2GB of available storage space
- ARM-based Windows devices are not supported
An Internet connection is required to activate a user license. BIAS X does not support offline activation. Offline mode is available after software activation.
Recommended Requirements (Windows)
- Windows 11
- Intel® Core i5 Processor
- 8GB of RAM
- Audio Plugin Formats: VST 3, AAX Native
- 2GB of available storage space
- ARM-based Windows devices are not supported
An Internet connection is required to activate a user license. BIAS X does not support offline activation. Offline mode is available after software activation.
COMPATIBLE DAWs
MacOS
- Ableton Live 10 to 12
- Garage Band 10
- Logic Pro X
- Cubase 12, 13, 14
- Pro Tools 2019–2023
- REAPER 6, 7
- Reason 11, 12, 13
- Studio One 4 to 7 (Artist and above)
Windows
- Ableton Live 10 to 12
- Cubase 12, 13, 14
- Pro Tools 2019–2023
- REAPER 6, 7
- Reason 11, 12, 13
- Studio One 4 to 7 (Artist and above)
BIAS X AI PRESET CREATION
Text to Tone, Music to Tone
- Internet Connection Required
- Supported Input Types: Text, Audio
- Supported Audio Formats: WAV, AIFF, MP3, MP4
- Maximum audio length: 15 minutes
- Minimum audio length: 10 seconds
- Maximum audio size: 150 MB
LICENSE
- Activate Device: Activate up to 5 computers, regardless of whether they are PCs or Macs. After purchase, logging in to BIAS X will activate the license.
- Deactivate Device: To deactivate a previous activation, go to the User Center > Desktop Software > Software Details > Activated License
AMPS
Low-Gain / Clean
- Blackface 63 – Vintage American clean
- Jazz Clean – Iconic stereo sparkle
- AC Chime – British invasion jangle
- Match 30 – Classic British chime
- Dumbel 50 – Boutique blues luxury
- TwoStone Studio – Silky boutique clarity
- Route 66 – American boutique drive
- PG Clean – PG Original
Mid-Gain / Crunch
- Bassmaster – Tweed-era punch
- Ecstasy 100 – Modern boutique crunch
- Tone Star Lead – Versatile boutique drive
- British Lead – Classic British roar
- BE 101 – Hot-rodded British stack
- British 800 – Arena rock staple
- Tangerine 30 – Brit-inspired growl
- PG Crunch – PG Original
High-Gain / Distortion
- Treadplate – Modern metal muscle
- California Mk IV – 80's West Coast high-gain
- Insanity III – Iconic 3 channel high-gain
- Archon Lead – Articulate modern drive
- SLO – Boutique lead classic
- Tangerine Rock – British high-gain roar
- VH-4 – German gain machine
- Briton – PG Original
- Harmonic Halo – PG Original
Acoustic
- Lo-Fi Box – PG Original
- Acoustic Sim – PG Original
- Flat Acoustic – PG Original
- ARE Acoustic – PG Original
Bass
- SV Blue – Vintage tube thunder
- Tone Mallet – Modern punchy low end
- GK-800 – Clean, responsive punch
- Mk Mini II – Compact clarity powerhouse
CABS
Electric Guitar
- 1x12 Blackface
- 1x12 Custom Boutique (In partnership with Spectre Digital)
- 1x12 Dumbel (In partnership with Spectre Digital)
- 2x12 Jazz
- 2x12 AC Chime
- 2x12 Match
- 2x12 Custom Clean
- 2x12 VH-4 (In partnership with Spectre Digital)
- 4x10 Bassmaster
- 4x12 British Lead
- 4x12 BE 101 (In partnership with Spectre Digital)
- 4x12 British 800
- 4x12 Ecstasy 100
- 4x12 California-30
- 4x12 Tangerine-30
- 4x12 Archon
- 4x12 Insanity III
- 4x12 SLO
- 4x12 Harmonic Halo (Created by Spectre Digital)
Acoustic & Bass
- 1x12 Acoustic Sim
- 1x12 Flat Acoustic
- 1x12 ARE Acoustic
- 2x12 Lo-Fi Box
- 4x10 Custom HF (In partnership with Spectre Digital)
- 8x10 SV Blue
EFFECTS
Volume & Dynamics
- Shhh! – PG Original
- Volairis – Smooth passive volume control
- Ruby – Classic red box squish
- Tetra – Studio-style multi-voice compression
- BluePress – Pro-grade tube compression
- AuralSentry – Precision VCA punch
EQ
- FreqLab 6 – Classic graphic EQ
- FreqLab 10 – Studio-wide EQ shaping
Filter & Wah
- WahSense – Expressive auto wah sweep
- ToneCry – Iconic wah cry
- Nebula Wave – Funky vintage envelope
- Wow – PG Original
Pitch & Octave
- Pomi – Pitch-shifting expression
- MiniOctet – Compact octave shimmer
- Octet – Polyphonic octave harmony
Boost & Overdrive
- Pure Lift – Transparent tone enhancer
- Radiance – British treble boost legend
- Ignite – Clean boost energy
- Evergreen – Classic mid-hump drive
- TubeKing – Tube-powered sustain driver
- Golden – Mythical transparent overdrive
Distortion & Fuzz
- Red Germanium – Warm vintage fuzz
- DistortionX – PG Original
- Drone – 80s orange crunch box
- The Obsessive – Dynamic boutique distortion
- Forge – Wild fuzz chaos
- Muffin Pie – Singing sustain fuzz
- Fuzz Modeler – PG Original
Modulation
- Arcwave – Lush stereo chorus
- CyberMistress – Modulated analog swirl
- Orange 90 – Classic phase sweep
- Swirl Wave – Liquid vibrato/chorus blend
- AeonFlux – Sweeping metallic flange
- Space Biscuit – Dual-stage phasing
- Lumen – Rich stereo tremolo
- Aurora – Lush ensemble chorus
- Legendary Flux – Legendary flanger
- WaveFlux – Rich analog phase movement
- Ringson – Analog ring mod textures
- Tide – 80s analog chorus shimmer
- Flow – Smooth optical tremolo
- MysticVibe – Iconic swirling vibe
- VHS – PG Original
- Lunar – PG Original
- Les Rotary – PG Original
Delay
- TimeArc – Classic digital delay
- TimeFade – Warm analog repeats
- TimeMemory – Modulated analog echo
- Ping Pong – Wide stereo delay
- Esrever – Ambient reverse echo
- PitchHaze – Pitch-shifted ambient modulation
- Stratos – PG Original
- TapeVoyager – Tape echo staple
- RetroReel – Vintage tape delay
- MegaTap – Dynamic digital multi-tap
- Magna – Iconic magnetic echo
- Time Modeler – PG Original
Reverb
- Luminis – Spatial ambient verb
- Ripple – Vintage spring verb
- Nebula – Ambient shimmer reverb
- OverReso – PG Original
- Silver Crest – PG Original
- Serenade – Lush studio plate
REVIEWS
VIDEOS
BIAS X Commercial
BIAS X Update Complete Guide
Automation Lesson
Using MIDI
BIAS X Deep Dive
BIAS X - Getting Started Guide
How to Download & Install BIAS X
BIAS X - Inside The AI
Jesse Zuretti BIAS X Testimonial
BIAS X Tone Demo - 70s Rock featuring Dre DiMura
FAQS
General
What is BIAS X?
How does it work?
BIAS X combines a professional-grade sound engine with Agentic AI, enabling two core workflows:
- Text-to-Tone: Describe the tone you want, and the AI builds it automatically.
- Music-to-Tone: Upload a clip of a guitar tone, and BIAS X recreates it instantly.
You can refine your tone using AI suggestions or full manual control—moving gear anywhere in the signal chain, tweaking amp stages, or customizing effects.
What is BIAS X and how is it different from BIAS FX 2?
BIAS X is Positive Grid’s next-generation guitar multi-effects software, designed from the ground up to deliver better tone, smarter workflow, and a more modern experience. Compared to BIAS FX 2, it features:
- A completely new tone engine with AI-powered amp and effect modeling
- All-New Cabinet Simulation: Developed by Positive Grid engineers and in partnership with Spectre Digital, featuring high-fidelity IRs of legendary cabs and mics.
- A redesigned immersive UI, optimized for speed and creative flow
- Built-in Agentic AI that helps you build, match, and refine tones in seconds
BIAS FX 2 was built around traditional tone modeling with static signal chains. BIAS X introduces dynamic AI-powered tone construction, a broader range of gear in one package, and intelligent features that reduce the time between inspiration and output.
What’s new about the BIAS X tone engine?
BIAS X is Positive Grid’s next-generation guitar multi-effects software, designed from the ground up to deliver better tone, smarter workflow, and a more modern experience. Compared to BIAS FX 2, it features:
- A completely new tone engine with AI-powered amp and effect modeling
- A new cab simulation system built with real-world capture methods
- A redesigned immersive UI, optimized for speed and creative flow
- Built-in Agentic AI that helps you build, match, and refine tones in seconds
BIAS FX 2 was built around traditional tone modeling with static signal chains. BIAS X introduces dynamic AI-powered tone construction, a broader range of gear in one package, and intelligent features that reduce the time between inspiration and output.
What is Agentic AI in BIAS X?
Agentic AI is your personal tone assistant built directly into BIAS X. It speeds up the workflow for pros and opens creative doors for everyone.
Agentic AI supports two major features:
- Conversational AI
Describe what you want—“Give me a fuzzed-out surf lead” or “Make this rhythm tone tighter”—and the AI builds or tweaks a preset in real time, selecting gear and adjusting parameters automatically. It can also give you feedback about your tone and tweak it with recommendations. - Audio to Preset
Drop in a guitar track or full song, and the AI analyzes the tone and reconstructs a matching preset. This is ideal for producers or players wanting to replicate recorded tones fast.
How much gear is included with BIAS X?
BIAS X includes 33 amp models, 25 cabs, and 63 effects. The gear spans classic, boutique, and modern sounds across multiple genres, giving users a versatile all-in-one solution.
Does it support dual-amp setups or advanced routing?
Yes. BIAS X supports dual-amp configurations, stereo rigs, and parallel processing chains—perfect for custom and complex tone builds.
Can I use third-party IRs?
Yes. You can load your own impulse responses to further shape your cabinet sound.
Does BIAS X support MIDI?
No, BIAS X does not support MIDI at the moment
Is ToneCloud still available in BIAS X?
ToneCloud is not part of BIAS X.
Can I transfer presets from BIAS FX 2 to BIAS X?
Presets from BIAS FX 2 are not directly transferable into BIAS X due to the new engine architecture and feature set.
However, you can still use both side by side. If you have a preset in BIAS FX 2 you love, export a short audio clip of it and upload it to Audio to Preset in BIAS X—letting the AI rebuild that tone instantly using the new engine. This approach offers higher fidelity than preset import and better utilizes the new AI engine.
Can I use my BIAS FX 2 expansion packs (e.g., Hendrix pack) in BIAS X?
Currently, BIAS X does not support expansion packs from BIAS FX 2, including the Hendrix pack. BIAS X introduces a redesigned sound engine and gear ecosystem, which may not be compatible with legacy content from FX2. Please stay tuned for future updates regarding compatibility.
Which plugin formats are supported?
- macOS: Audio Units (AU), VST3, AAX
- Windows: VST3, AAX
- Note: BIAS X does not support VST2.
Is it Apple Silicon native?
Yes. BIAS X runs natively on Apple Silicon (M1, M2).
Which DAWs are compatible?
See COMPATIBLE DAWs in the Spec section.
Does BIAS X work in standalone mode?
Yes, you can run BIAS X without a DAW—perfect for practice, live use, or building tones quickly.
Can I use it with bass or acoustic guitars?
Yes. BIAS X is optimized for electric guitar but works well with bass and acoustic instruments too, thanks to its flexible gear and tone shaping options.
Do I need to know a lot about gear to use BIAS X?
No—but if you do, you’ll love what’s under the hood. BIAS X is built for flexibility at every level: you can get great tones fast using AI tools, or take full manual control to fine-tune every detail. Move gear freely anywhere in the signal chain, shape amp behavior stage-by-stage, and design complex dual-amp or stereo setups. Whether you’re moving fast or going deep, BIAS X supports your workflow.
What’s new about the user interface?
- Modern, clean design with top/side/bottom bars for faster navigation
- More screen space for tone editing and signal flow clarity
- New Gear Menu for quick drag-and-drop tone building
- Revamped Preset Manager with smart foldering and easy file control
Is it a one-time purchase?
Yes. BIAS X is a perpetual license. No subscription required.
How many devices can I activate?
You can activate BIAS X on five devices simultaneously. Deactivation is possible if you upgrade or replace your computer.
Do I need an internet connection?
Yes—for first-time activation and to use AI features like Agentic AI and Audio to Preset. Once activated, BIAS X can run offline for regular use.
I already own a BIAS product. Can I upgrade to BIAS X at a discount?
If you already own a BIAS product (BIAS, BIAS FX 2, BIAS Amp), you may be eligible for a special upgrade price on BIAS X depending on your current license. Follow this link to see if you qualify.
I own a Spark smart amp. Can I get a discount on BIAS X?
If you already own a Spark series guitar amp, you may be eligible for a special upgrade price on BIAS X. Follow this link to see if you qualify.
System Requirements
macOS
- macOS 11.7 or newer
- Intel Core i5 (8th gen) or Apple Silicon (M1/M2…etc)
- 8GB RAM minimum
- 1GB storage
- Dedicated GPU recommended
Windows
- Windows 10 Version 1903 or newer
- Intel Core i5 or better
- 8GB RAM
- 2GB storage
- Dedicated GPU recommended