REACTOR | Intelligent Guitar Combo Amp | Positive Grid
INTELLIGENT GUITAR COMBO AMPLIFIER
$349 - $449
Overview
REACTOR is a 1x12" combo amp powered by Amp Intelligence — a sound engine that builds tone the way you imagine it — from prompts, photos, and recordings. Create signal chains on demand, or build amps that don't exist anywhere else.
50W or 100W with selectable wattage for consistent tone at any volume.
Amp Intelligence
A new kind of engine with over 1M tones analyzed and hundreds of amp designs studied at the circuit level. Now you can build dynamic tone from the ground up.
Tone Capture
Type an idea, snap a photo, or record a sound. REACTOR builds your complete tone from it in seconds.
Rig-Ready
50W and 100W models, custom 12" speaker, selectable wattage, and direct recording to any DAW.
Tone Memory
REACTOR remembers how you build tone and gets closer to your sound every time.
How REACTOR builds sound.
REACTOR's Amp Intelligence decoded over 200 amp designs at the circuit level: gain stages, transformers, bias points, harmonic response, capturing the behavioral DNA of the most legendary amps ever built. So every tone it builds is grounded in how great amps actually work. The result is tone that breathes — dynamic, alive, and responsive to every note you play. Any tone you can imagine delivered on demand.
Instant Control.
One knob puts six amp categories at your fingertips. Classic Gain, EQ, and Master controls let you shape tone instantly from the panel. Six essential effects with dedicated buttons and onboard controls for instant tweaking.
Stage tone at any volume.
Most amps thin out when you turn them down. REACTOR doesn't. Selectable wattage — 1W, 25W, or full power — keeps the tone full and present at any volume. A custom 12″ speaker in a wood cabinet delivers the warmth and presence you'd expect at stage volume, even in your bedroom. REACTOR sounds like itself wherever you play it.
Creator Hub
Describe What You Want.
REACTOR delivers it—full, rich, and dynamic. Powered by Amp Intelligence, Creator Hub's Tone Capture gives you three ways to build tone — using text prompts, images, and audio.
Build your own amps.
Go further than matching existing gear. Combine characteristics, shape deep parameters, and create original amp voices that are entirely your own. Name them, save them, and share them on ToneCloud®.
REACTOR APP
WHERE TONE GETS CREATED.
Choose from Classic or Expressive views.
Amps
24 amp models to start. Build as many of your own as you want. Full parameter access to adjust gain structure, EQ, bias, and voicing on any of them. Choose from Classic or Expressive views in Tone View.
Effects
Run eight simultaneous effect slots with full parameter control across Gate, Compressor, Drive, Modulation, Delay, Reverb, Wah and EQ.
Presets
Save unlimited presets by song, session, or genre in the app. Load and access 8 onboard preset slots for instant recall directly from the amp panel.
ToneCloud®
Browse and download tones and custom amps from other players, then share your own with the community.
Signal Path
Drag effects anywhere in the signal chain and insert external pedals through the FX loop at any point. Every routing change is immediate and audible.
Complete Rig
Built to fit your setup.
Top Panel
USB-C Direct Recording
Bluetooth Audio
FX Loop
MIDI In
Headphone Out
Choose Your Fit.
REACTOR 50 | REACTOR 100
Power: 50W / 25W / 1W
Speaker: 12" custom-voiced
Best for: Feel and immediacy
Power: 100W / 25W / 1W
Speaker: 12" custom-voiced, premium magnet
Best for: Headroom, punch, and projection
REACTOR CONTROL*
The official footswitch for REACTOR. Six footswitches, expression pedal input, and wireless or wired connection give you hands-free control over presets and effects on stage.
*REACTOR CONTROL is optional and sold separately.
Specs
- Power Amp Rating — REACTOR 50: 50W
- Power Amp Rating — REACTOR 100: 100W
- Power Control — REACTOR 50: 50W / 25W / 1W
- Power Control — REACTOR 100: 100W / 25W / 1W
- Speaker — REACTOR 50: 1 x 12" custom speaker, 4Ω
- Speaker — REACTOR 100: 1 x 12" custom speaker, 8Ω
- Main Input Power: AC 100–240V, 50/60Hz
- Dimensions — REACTOR 50: 18.11 x 9.45 x 16.46 inches (460 x 240 x 418 mm)
- Weight — REACTOR 50: 10.7 kg / 23.59 lb
- Mobile Apps: REACTOR App for iOS and Android
- Accessories: REACTOR Control
FAQ
What makes REACTOR different from other amps?
Traditional amps are built around presets and manual controls. To find a sound, you typically scroll through preset libraries or adjust multiple knobs — gain, EQ, effects — until you get something close. REACTOR changes that workflow, allowing for more intuitive sound creation.
Who is REACTOR for?
REACTOR is designed for players who want fast, expressive tone creation — whether at home, in the studio, or on stage.
Is REACTOR available worldwide?
Availability varies by region. Check Positive Grid's website or authorized retailers.
Can I use REACTOR for live performance?
Yes. It's designed for home, studio, and stage.