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Based on price data from 1 merchant for "Postive Grid Bias Rack Processor". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Unlock the creative potential of your guitar rig with the Positive Grid BIAS Rack Processor, a versatile guitar preamp designed for musicians who crave customizability and precision. This powerhouse unit, tightly integrated with the BIAS Amp Pro software, lets you design, match, and store any amp tone imaginable. Whether you're in the studio or on stage, the BIAS Rack Processor delivers unmatched flexibility with its ability to replicate the sound of any amplifier, right down to the component level.

The heart of this system is the Amp Match technology, which captures and re-creates the intricate nuances of your favorite amps. You can effortlessly upload your creations to the BIAS ToneCloud, a thriving community where thousands of amp models crafted by legendary artists and fellow guitarists are just a click away. With 25 preset slots, you can instantly recall tones that range from pristine cleans to monstrous high-gain leads.

Seamlessly switch between presets, even during a live performance, using USB or Bluetooth connectivity with your iOS device. The BIAS Rack Processor is equipped for both practice and professional environments, featuring direct outputs for connection to PA systems and MIDI compatibility for integrating with your existing gear.

Key Features:

  • Rackmount guitar and bass preamplifier with full integration with BIAS Amp Pro software and BIAS Amp app
  • 25 preset slots for instant recall
  • Amp Match technology for re-creating recorded guitar tones
  • Access to thousands of custom Amp Match presets via ToneCloud
  • USB and Bluetooth connectivity for software integration
  • Effects loop with switchable series/parallel operation
  • Direct outputs for sound systems or recording devices
  • MIDI in/out/thru for enhanced connectivity with MIDI equipment

Product specs

Brand Positive Grid
Model Bias Rack Processor
Year 2010s
Categories Guitar Heads
Color Family Black
Electronics Solid State
Impedance 16 ohms, 4 ohms, 8 ohms
Number of Channels 1 Channel
Number of Inputs 1 Input
Output Power (Watts) 600
Power Tube Type None
Reverb None

FAQs

What is the output power of the Positive Grid BIAS Rack Processor?

The Positive Grid BIAS Rack Processor delivers 600 watts RMS at 8 ohms and 300 watts at 16 ohms, providing ample power for both live performances and studio use.

Can the Positive Grid BIAS Rack Processor connect to my computer or mobile device?

Yes, it features USB connectivity for Mac and Windows, and Bluetooth connectivity for iPad and iPhone, allowing integration with the BIAS Amp app.

Does the Positive Grid BIAS Rack Processor support MIDI control?

Yes, it includes fully configurable MIDI controls with 5-pin connectors for MIDI In/Thru/Out, allowing for versatile integration into your setup.

What is Amp Match Technology in the Positive Grid BIAS Rack Processor?

Amp Match Technology allows the BIAS Rack Processor to precisely replicate the tone of any real-world amplifier, providing users with extensive customization options.

How can I customize the sound of the Positive Grid BIAS Rack Processor?

You can virtually swap out components such as tube types, tone stacks, power amp, transformer, cab, and mic, offering extensive sound design capabilities.

Is the Positive Grid BIAS Rack Processor suitable for both guitar and bass?

Yes, the BIAS Rack Processor is designed to accommodate both guitar and bass, making it a versatile choice for multi-instrumentalists.

Solid State Records

Solid State Records

Bobby Lynge Positive Grid BIAS Rack Demo

Video thumbnail for Bobby Lynge Positive Grid BIAS Rack Demo by Solid State Records

Bobby Lynge Positive Grid BIAS Rack Demo

Solid State Records

Solid State Records

Video thumbnail for POSITIVE GRID / BIAS Rack Processor by Alberto Barrero

POSITIVE GRID / BIAS Rack Processor

Alberto Barrero

Alberto Barrero

Video thumbnail for BIAS Rack Processor - blues demo by JP Soars by Positive Grid

BIAS Rack Processor - blues demo by JP Soars

Positive Grid

Positive Grid

Video thumbnail for GearGossip Bias Rack Processor review (ENG) by ThomasSchuber

GearGossip Bias Rack Processor review (ENG)

ThomasSchuber

ThomasSchuber

Video thumbnail for BIAS Rack | Aaron Patrick of All That Remains #whyBIAS by Positive Grid

BIAS Rack | Aaron Patrick of All That Remains #whyBIAS

Positive Grid

Positive Grid

Reviews

PROS

  • Amp Match technology rivals high-end models like Kemper

  • Extensive customization with software for deep amp design

  • User-friendly interface; easy setup without extensive manual reading

  • Ability to load your own IRs and modify amp components

  • Affordable price for the features offered compared to competitors

  • Seamless integration with PC/Mac and mobile devices for remote control

  • Great for live performances with direct mixer connection and stereo outputs

  • Supports storing and sharing custom sounds with the BIAS community

  • Compatible with MIDI footswitches for easy live sound management

CONS

  • Limited built-in effects compared to competitors like AXE FX

  • Noise issues at high gain levels

  • Complexity may overwhelm users not interested in technical details

  • Some reports of software bugs and customer service issues

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Postive Grid Bias Rack Processor.

Software and compatibility

  • High gain presets may require additional processing or external boosts to achieve desired metal tones, as built-in gain stages might feel insufficient for some users.

    Source

Comparisons

  • Some users prefer the tone of the Mississippi Criminal model from POD Farm Metal Shop over BIAS Rack for achieving dirtier, hard rock tones.

    Source
  • The GX-100 offers a touch screen and graphical interface, an upgrade over the GT-10, enhancing user interaction and ease of navigation.

    Source
  • The GX-100 is noted as having a smaller footprint compared to the GX-10, offering a more compact solution with similar capabilities.

    Source
  • The GX series primarily focuses on Boss FX collections rather than extensive amp modeling, distinguishing it from units like Helix or Quad Cortex.

    Source

User experience

  • Owners report needing to max out multiple gain stages and use an EQ boost to achieve satisfactory high-gain tones on the BIAS Rack Processor.

    Source
  • Owners appreciate the GX-100's interface, which improves usability compared to older models like the GT-10, offering a more modern user experience.

    Source

Features and functionality

  • The GX-100 allows stacking effects in any order without restrictions, providing advanced versatility in signal path customization.

    Source

Use cases and applications

  • The GX-100’s capability aligns well with the 4-cable method, making it suitable for users integrating with other gear like the Positive Grid Bias Rack.

    Source

Critic Reviews

Positive Grid BIAS Rack Review - Premier Guitar

premierguitar.com

The Positive Grid BIAS Rack Processor offers excellent modeled tones and a user-friendly control layout, making it a dream for metal players and tone tweakers alike. Its integration with Positive Grid's ecosystem allows for vast customization and access to a cloud-based tone library. However, the experience is marred by incomplete documentation and software issues, including a problematic Amp Match feature and crash-prone software that hinders deeper editing and customization. While the hardware itself is promising, potential buyers should be cautious, keeping an eye on promised software updates to fully unlock its potential.

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