Positive Grid Bias Head Guitar Amp
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600-watt Amp Match Amplifier Head w/cover
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- SKU
- BIAS-Head
Description
Positive Grid BIAS Head Guitar Amp
The BIAS Head delivers responsive, articulate amplification in a compact toaster-sized form factor that weighs just 11.6 pounds. Its intuitive front-panel controls—gain, bass, middle, treble, presence, master, and Modern/Vintage voicing switch—let you dial in everything from pristine cleans to saturated drives without diving into menus. The amp captures legendary tube amp character while offering the flexibility of digital modeling, letting you experiment with speaker simulations and mic placements in real-time.
Power & Connectivity
The 600W Class-D power amp delivers 850W at 4Ω, 600W at 8Ω, and 300W at 16Ω speaker output, providing plenty of headroom for both studio and stage use. Connectivity spans dual L-R line outputs (XLR and TRS jacks), headphone output, mono effect loop, MIDI in/out/thru, USB for Mac/PC, Bluetooth wireless, and two footswitch inputs—giving you multiple routing options for recording direct or running through a speaker cabinet.
Sound Design & Presets
Twenty-five onboard custom amplifier presets get you started immediately, while nine built-in reverbs add spatial character to your tone. The included BIAS Amp Pro software license unlocks component-level amp design capability from the front panel, letting you modify and create custom presets that capture your exact sonic vision.
Key Features
- 600W Class-D power amp with 850W at 4Ω output
- 25 onboard custom amplifier presets
- Front-panel controls: gain, bass, middle, treble, presence, master, Modern/Vintage voicing switch
- Nine different built-in reverbs
- Dual XLR and TRS line outputs plus headphone output
- Mono effect loop with TS jacks
- MIDI in/out/thru connectors
- USB connectivity for Mac and PC
- Bluetooth wireless capability
- Two footswitch inputs (TRS jacks)
- Full BIAS Amp Pro software license included
- Weighs 11.6 pounds with compact form factor
The BIAS Head combines lightweight portability with serious amplification, making it equally at home in a bedroom studio or on a professional rig.
More Information
| Condition | New |
|---|---|
| Country of Manufacture | Taiwan |
Reviews
At a Glance
The Positive Grid BIAS Head is a 600W Class-D amp head in a compact 11.6-pound package that delivers responsive, articulate cleans and saturated drives with intuitive front-panel controls and digital modeling flexibility. Built for intermediate to advanced players gigging or recording, it lets you dial in tone without menu diving while capturing legendary tube amp character with real-time speaker and mic simulation. Choose it for lightweight portability that doesn't compromise on headroom, connectivity (XLR, USB, Bluetooth, MIDI, effect loop), or the included BIAS Amp Pro software for unlimited custom preset design.
Who This Is For
Great for
- ✓ Home Recording
- ✓ Studio Sessions
- ✓ Live Performance
- ✓ Gigging
Skill level: Intermediate · Advanced · Professional
Frequently Asked Questions
What's included with the BIAS Head?
The amp includes 25 onboard custom amplifier presets, nine built-in reverbs, full BIAS Amp Pro software license for component-level amp design, dual XLR and TRS line outputs, headphone output, mono effect loop, MIDI in/out/thru, USB connectivity, Bluetooth wireless, and two footswitch inputs.
Can I use the BIAS Head in both the studio and live performance?
Yes. At 11.6 pounds with 600W Class-D power (850W at 4Ω), it delivers plenty of headroom for studio direct recording and stage gigging; it works with speaker cabinets, runs direct to a mixing console via XLR/TRS, and supports wireless footswitches and MIDI control.
Is this amp for beginners?
No; the BIAS Head is designed for intermediate, advanced, and professional players. Its strength lies in responsive tone-shaping and digital modeling for studio and live work rather than simple practice amplification.
How do I design my own amp sounds?
The included BIAS Amp Pro software license unlocks component-level amp design directly from the front panel, letting you modify presets and create custom sounds that match your exact tonal vision without diving into deep menus.
What are the power output specs?
The BIAS Head delivers 850W at 4Ω, 600W at 8Ω, and 300W at 16Ω speaker output, providing substantial headroom for both studio recording and live stage use.
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