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Average Price: $926

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$300

$801+

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

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Description

Unleash your creativity with the Positive Grid BIAS Head Processor, a powerhouse for guitar and bass amplification. This 600-watt guitar amplifier combines the raw energy needed for live performances with the flexibility of cutting-edge technology. Seamlessly integrate your gear with the BIAS Amp Pro software and app, allowing you to craft your own custom amplifiers and unlock an endless array of tones.

The BIAS Head is not just about raw power; it’s about precision. With Amp Match technology, you can replicate the unique character of any amplifier, blending the nuances of classic, modern, or boutique amps into your sound. Load your creations onto the BIAS Head and explore thousands of custom models available on the BIAS ToneCloud, making it a versatile tool for both studio recording and live performances.

The built-in effects loop, switchable between series and parallel, offers you the freedom to incorporate your beloved pedals seamlessly. Plus, with the ability to store 25 presets, you can easily switch between your favorite sounds on stage. Whether you're driving a 4-, 8-, or 16-ohm speaker cabinet, or going direct with realistic cabinet emulation, the BIAS Head has you covered for any scenario.

Designed for the modern musician, it connects effortlessly to your devices via USB and Bluetooth, offering quick updates to your sound palette. The Positive Grid BIAS Head Processor isn’t just an amplifier; it's a revolution in tone crafting.

Key Features:

  • 600-watt power amp for guitar and bass
  • Integrates with BIAS Amp Pro software and app
  • Amp Match technology for precise tone replication
  • Stores 25 presets for quick access
  • Built-in effects loop (series/parallel switchable)
  • Direct outputs for live or studio use
  • MIDI connectivity for equipment integration
  • USB and Bluetooth connectivity for easy updates and control
  • Access thousands of amp models on the BIAS ToneCloud

Product specs

Brand Positive Grid
Model Bias Head 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 Head Processor?

The Positive Grid Bias Head Processor delivers 600 watts RMS at 8 ohms and 300 watts at 16 ohms, making it a powerful option for various performance settings.

Can the Positive Grid Bias Head Processor match the tone of other amplifiers?

Yes, the Bias Head Processor features Amp Match Technology, which allows it to precisely replicate the tone of any real-world amplifier.

Does the Positive Grid Bias Head Processor support MIDI control?

Yes, the Bias Head Processor has fully configurable MIDI controls with 5-pin connectors for MIDI In, Thru, and Out, allowing seamless integration with MIDI setups.

Is the Positive Grid Bias Head Processor compatible with mobile devices?

The Bias Head Processor offers Bluetooth connectivity for integration with the BIAS Amp app on iPad and iPhone, providing flexible control options from mobile devices.

What connectivity options are available on the Positive Grid Bias Head Processor?

It includes a Hi-Z 1/4-inch input, effect send and return, headphone output, XLR balanced and 1/4-inch TRS line out, and USB connection for BIAS Mac and Windows.

Positive Grid

Positive Grid

BIAS Head Amp | Guitar Head Amplifier Overview

Video thumbnail for BIAS Head Amp | Guitar Head Amplifier Overview by Positive Grid

BIAS Head Amp | Guitar Head Amplifier Overview

Positive Grid

Positive Grid

Video thumbnail for Positive Grid BIAS Head - Amp Match Amplifier by ProGuitarShopDemos

Positive Grid BIAS Head - Amp Match Amplifier

ProGuitarShopDemos

ProGuitarShopDemos

Video thumbnail for BIAS Head amplifier - FAQ #2 by Positive Grid

BIAS Head amplifier - FAQ #2

Positive Grid

Positive Grid

Video thumbnail for Positive Grid Bias Head (demo) by Eirik Stordrange

Positive Grid Bias Head (demo)

Eirik Stordrange

Eirik Stordrange

Video thumbnail for Acey Slade on the BIAS Head by Positive Grid

Acey Slade on the BIAS Head

Positive Grid

Positive Grid

Video thumbnail for Sean Halley Plays BIAS Head by Positive Grid

Sean Halley Plays BIAS Head

Positive Grid

Positive Grid

Video thumbnail for BIAS Head Sound Examples Volume I by Positive Grid

BIAS Head Sound Examples Volume I

Positive Grid

Positive Grid

Video thumbnail for BIAS Head - Rarity by Positive Grid

BIAS Head - Rarity

Positive Grid

Positive Grid

Video thumbnail for Positive Grid BIAS Head Overview | Full Compass by Full Compass

Positive Grid BIAS Head Overview | Full Compass

Full Compass

Full Compass

Reviews

Owner Insights

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

Software and compatibility

  • Presets are not interchangeable between Positive Grid Bias Head, BiasFX2, and Spark due to different code bases, limiting ecosystem flexibility.

    Source

Features and functionality

  • The Spark foot pedal is incompatible with the Bias Head, necessitating alternative foot pedal solutions like the Behringer 1010 for parameter control.

    Source

Use cases and applications

  • Users often pair the Bias Head with a Quilter ProBlock and an Emenance Legend EM-12 cab for enhanced sound dynamics and versatility.

    Source

Critic Reviews

Positive Grid Bias Head

soundonsound.com

Positive Grid's Bias Head is a deep dive into the world of amp modeling, offering a rich playground for tone tweakers with its 25 presets and 600W Class-D power. The review applauds its intuitive interface and the realistic playing experience it delivers, thanks to its advanced editing capabilities. While the absence of onboard effects might deter some, its compatibility with external pedals compensates for this gap. The amp-match feature is notably impressive, although it doesn't perfectly replicate real amps. Overall, it's a high-quality build that promises a near-authentic tube amp feel, making it a worthy contender for serious guitarists.

positive

Positive Grid BIAS Head (Powered Version) review | MusicRadar

musicradar.com

The Positive Grid Bias Head Processor is a formidable entry into the digital amp simulation market, shining with its low-latency performance and a stellar app interface. This head unit promises seamless integration with the Bias Amp software, offering a virtually lag-free experience and a robust 600-watt power stage. Its intuitive design and familiar controls make on-the-fly adjustments a breeze. While effects are limited to reverb without additional purchases, the core tones are highly adaptable for both live and studio settings. However, Windows 7 users may face compatibility issues. Overall, the Bias Head stands out for its flexible sound design capabilities, making it a solid choice for those ready to embrace digital modeling.

positive

Positive Grid Bias Head

guitarinteractivemagazine.com

The Positive Grid Bias Head delivers impressive amp modeling in a sleek, compact package. Its superb build quality, flexibility, and ease of use make it a formidable competitor in the modeling amp market. The integration with Bias Amp Pro software offers deep customization, though the lack of built-in effects and less accurate amp matching compared to competitors like Kemper might be a drawback for some. The included Tonecloud feature, however, is a boon for tone seekers, allowing access to a vast library of presets. While it won't dethrone the likes of Fractal Audio, its value for money and built-in power amp make it a strong contender for those needing a versatile, gig-ready amp.

positive

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