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Positive Grid BIAS Head Processor Amp Matching Guitar Processor Head

The most versatile guitar processor head on the planet: the Positive Grid BIAS Head Processor Amp Matching Guitar Processor Head.


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Was: $999.00 Discounted Price Now: $699.00
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Create Your Own Signature Sound
Load any amp model, and then instantly modify its design with the simple turn of a knob or by flipping a switch on BIAS Head Processor's friendly front-panel. It couldn't be easier. Twist a knob to immediately switch from an ultra-clean solid-state head to a velvety tube amp—or create hybrid versions of classic amps. Completely change the tubes' circuit design by turning just one knob to make the amp distort smoothly or break up immediately. Twist another knob to add up to four additional tube stages for extra gain on soaring solos. Adjust the balance of power amp and preamp distortion by turning two knobs. Flip a switch to add a cabinet sim. Awesome tones ranging from glassy to overdriven—and everything in between—are yours in a heartbeat. And BIAS Head Processor's tone stacks for Bass, Middle, Treble and Presence change their tone with each amp model you play through, sounding like the tone stacks on the original amps.

BIAS Head Processor's rear panel has all the connections you'll ever need for live shows or studio work.

Component Level Amp Design
Positive Grid modeled the best-sounding guitar amps down to their individual electronic components, including the transformers, tubes, resistors and capacitors. The result is a stunning response to your feel—whether you're picking hard or soft, tapping, doing volume swells, or using a slide or wah pedal—that sounds just like you're playing through the original amps. BIAS Head Processor's Amp Match function also lets you easily capture the exact sound of any guitar amp, including rare amps owned by your buddies and amps recorded on rock's most iconic records. Once matched, you can go into further amp customization right on BIAS Head Processor's front panel - swap out the preamp and power amp tubes, change the tubes topology, tweak gain stages, and more.

Get your Positive Grid BIAS Head Processor Amp Matching Amp Matching Guitar Processor Head today at the guaranteed lowest price from Sam Ash Direct with our 45-day return and 60-day price protection policy.

Things You Will Get:

  • Guitar Processor Head


by PowerReviews
Model BIAS Head Processor
Warranty Info:

Limited Warranty:

Positive Grid warrants that your new Positive Grid product, when purchased at an authorized Positive Grid retailer or reseller, shall be free of defects in materials and workmanship for a period of One (1) Year from the original date of purchase. Positive Grid may, in its sole discretion, require proof of the original purchase date in the form of a dated copy of the original authorized dealer’s invoice or sales receipt.

During the Warranty Period:

Positive Grid shall, in its sole discretion, either repair or replace any product that proves to be defective upon inspection by Positive Grid. Positive Grid reserves the right to update any product returned for repair and to change or improve the design of the product at any time without notice. Positive Grid reserves the right to use reconditioned parts and assemblies as warranty replacements for authorized repairs. Service and repairs are to be performed only by Positive Grid or a Positive Grid authorized service center. Unauthorized service, repair or modification will void this Limited Warranty. This is your sole warranty. Positive Grid does not authorize any third party, including any dealer, retailer or sales representative, to assume any liability on behalf of Positive Grid or to make any warranty for Positive Grid.

Transferability/Assignment of Warranty:

This Limited Warranty is extended to the original retail purchaser. This Limited Warranty can be transferred to anyone who may subsequently purchase this product provided that such transfer is made within the Warranty Period and Positive Grid is provided with all of the following items: all warranty registration information for the new owner, and a photocopy of the original sales receipt. Warranty coverage shall be determined by Positive Grid in its sole discretion. When transferring ownership of a product that provides online connectivity to Positive Grid software or ToneCloud, it is very important that you CANCEL your online subscription(s) before transferring ownership of the product.

For additional warranty information, please visit https://help.positivegrid.com/hc/en-us/articles/214224126-Positive-Grid-Product-Warranty

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