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Positive Grid BIAS Mini Bass 300-Watt Bass Guitar Amplifier Head

With complete connectivity and easy to use functions, create, control, download, and share your music with ease using the compact and powerful Positive Grid BIAS Mini 300-Watt Bass Guitar Amplifier Head and its accompanying software.


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Discounted Price $799.00
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Building on the foundation set by its larger siblings BIAS Head and BIAS Rack, BIAS MINI Bass squeezes the same advanced component emulation engine, authentic dynamic amp feel, and wireless connectivity into an even smaller and lighter package made just for bass players. Weighing in at just over 5 pounds, with a built-in 300-watt power amp and the ability to get any bass amp tone imaginable, nothing else on the planet comes close to BIAS MINI for small-to-medium sized gigs and recording sessions.

Easy to Use
Take one look at the front panel of BIAS MINI Bass and you'll feel right at home because the knobs do what you expect them to. Call up one of the sixteen onboard presets and tweak the Gain, Bass, Mid, Treble, and Master just like you'd expect to on a normal tube head. Push the Output button to cycle through output controls for the amp, headphone, and line outputs, and then get back to laying it down.

Small Size, Huge Tone
The ability to have any tone you might need at your fingertips is immensely powerful for gigs and sessions, and the ground-breaking component emulation engine inside BIAS MINI Bass ensures that you'll be able to get any bass tone you need - from hyper clean to seriously fuzzy and anything in between. With a built-in power amp rated at 300 watts at 4 ohms, there's plenty of power on tap for medium-sized gigs and recording sessions, and at just over 5 pounds you won't need an extra hand to carry it onstage.

Powerful Software
If you want to dive headlong into the world of amp customization, BIAS MINI Bass comes with our amazing BIAS AMP 2 Pro amp designer software, which allows you to recreate the sound and feel of nearly any existing amplifier. Even better, it gives you the power to create an entirely new amp that is unique to you and the way you play.

Connect via built-in Bluetooth or USB, and open up a world of component options previously only available with a soldering iron: choose between different preamp and power amp circuits, change the tubes and transformers, add clipping diodes for fuzzy bass sounds, and try out different rectifiers - all completely authentic and all in real time. It's like having a boutique amplifier workshop at your fingertips.

And if you're on the move, you can get the same powerful features of BIAS AMP 2 on your iPad or iPhone and have instant access to all your favorite tones anytime, anywhere, with our new freemium mobile app - BIAS AMP 2 Mobile!

Connect to the Cloud
All BIAS products can connect to the Positive Grid ToneCloud, a cloud-based community Positive Grid has created specifically for musicians. It's much more than just an online storage tank for sounds - it's a place to discover new ideas and new tones. You can download new amps created by artists and recording studios, backup and share your own creations with other guitarists in the community, and interact with other musicians with similar interests.

BIAS AMP 2 software features the ability to Amp Match, analyzing a source amp tone and applying the necessary corrective processing to make a custom amp more closely match the original. Even if you don't plan on matching amps yourself, you can still take advantage of the Amp Match feature by downloading custom amps other players have matched from the ToneCloud.


  • Bass Amplifier Featuring Component-Level Emulation Engine, Compact Size, Weighs Only 5.2 Pounds
  • 16 Onboard Custom Amplifier Presets, Supports Amp Match Custom Amplifier Presets for Direct Operation
  • Built-In 300-Watt Class D Power Amplifier (300 Watts at 4 Ohms, 150 Watts at 8 Ohms)
  • Glitchless Mono Effects Loop (Loop Does Not Mute at Patch Recall)
  • Built-In Noise Gate, 9 Built-In Reverbs
  • Balanced XLR Direct Output, MIDI I/O on 1/8th Inch Connectors, Footswitch Input, Front Panel Headphone Output on 1/8th Inch Connector, USB for Connecting to Desktop Mac or PC
  • Full BIAS AMP 2 Pro Software License (199-Dollar Value)
  • Built-In Bluetooth Wireless for Mobile Control, BIAS AMP 2 Mobile Full Functionality Once You Connect BIAS MINI to the BIAS AMP 2 Mobile App on Your Mobile Device (19.99-Dollar Value)
  • ToneCloud Integration - Backup, Download and Share Presets on the Cloud
  • Load Custom IR's, Send IR's to Line Outputs Exclusively
  • Adapter Cables Included

Get your Positive Grid BIAS Mini Bass 300-Watt Bass Guitar Amplifier Head today at the guaranteed lowest price from Sam Ash with our 45-day return and 60-day price protection policy.

Things You Will Get:

  • Bass Amplifier Head
  • Connector Cables


by PowerReviews
Amp Type Class D
Watts 300
EQ Three-Band
Effects Loop Yes
Inputs 1 x 1/8" MIDI Input, 1 x 1/4" Footswitch Input, 1 x USB Input, 1 x 1/4" Return Input
Outputs 1 x Balanced XLR Direct Output, 1 x 1/8" Front Panel Headphone Output, 1 x 1/8" MIDI Output, 1 x 1/4" Speaker Output, 1 x 1/4" Send Output
Line Out Yes
Reverb Yes
Footswitch I/O Type 1 x 1/4"
Footswitch Included No
Weight 5.2 lbs.
Series BIAS
Model BIAS Mini Bass
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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