Positive Grid Reactor 50W 1x12" AI-Powered Guitar Combo Amp - Black

Describe the tone you want. Play it seconds later. Billed by Positive Grid as "the world’s first AI-powered guitar amplifier," the Reactor 50 pairs 50 watts of performance-ready power with an Agentic DSP engine that translates text prompts, audio clips and conversational adjustments into fully realized, playable amp tones. Powered by the touch-sensitive BIAS X modeling engine and a custom-voiced 12” speaker, it delivers dynamic response and phase-accurate response that feels immediate under your hands. Selectable wattage (1W/25W/50W) lets you tailor output for home practice, studio tracking or full-volume rehearsal. Intuitive top-panel controls, app-based signal chain editing and extensive connectivity—including USB-C audio, MIDI, effects loop, Bluetooth, line out and headphone out—make the Reactor 50 a modern 1x12" combo built for today’s workflows.

Custom 1x12” Design With Selectable Wattage

The Reactor 50 pairs its 50W power section with a custom-voiced 12” speaker engineered to translate detailed modeling into punchy, room-filling projection. Designed for balanced low-end response, articulate mids and clear, controlled highs, the speaker delivers focus and clarity whether you’re tracking in a studio or cutting through a live mix. Selectable wattage settings—1W, 25W or 50W—allow you to tailor output and feel without sacrificing tonal integrity, preserving dynamic response at apartment levels while maintaining headroom for rehearsals and small to mid-sized stages. The result is a 1x12” combo that adapts naturally to different environments while retaining its character and immediacy wherever you play.

BIAS X Engine and Agentic DSP Deliver Expressive Feel

At the core of Reactor 50 is the integration of Positive Grid’s BIAS X modeling engine with its AI-driven Agentic DSP architecture. Rather than relying on static snapshots of amp tones, the system analyzes and reconstructs the signal chain at a component level, preserving harmonic interaction and dynamic response for a more natural playing experience. Pick lightly and tones clean up with nuance; dig in and the amp pushes back with dynamic compression and bloom. The feel remains responsive and immediate across gain structures—from articulate cleans to saturated lead tones—delivering the touch sensitivity and interaction players expect from performance-ready amplification.

AI-Driven Tone Creation Through the Reactor App

Through the Reactor app, Reactor 50 moves beyond traditional preset browsing by allowing you to generate and refine tones through intuitive AI interaction. With Text-to-Tone, you can describe the sound you want—whether it’s a “tight, mid-gain British crunch” or a “glassy ambient clean”—and receive a playable tone within seconds. Music-to-Amp lets you upload a song or audio reference and match the guitar character, while conversational adjustments enable ongoing refinement with simple prompts like “add more warmth” or “less gain.” This streamlined workflow shortens the distance between inspiration and execution, transforming tone creation from a technical process into a creative one.

Hands-On Controls and Modern Performance Connectivity

Reactor 50 offers multiple ways to shape and control your sound without sacrificing immediacy. The top panel features gain, EQ, master and volume controls, selectable amp voicings (Clean, Warm, Grit, Crunch, Hi-Gain and Extreme), Push/Smooth and Heat toggles, and a full suite of onboard effects including drive, compression, gate, modulation, delay and reverb. For deeper editing, the Reactor app provides drag-and-drop signal chain customization and over-the-air updates. Comprehensive connectivity—including USB-C audio interface functionality, MIDI In, effects loop, Bluetooth, line out and headphone out—integrates Reactor seamlessly into live rigs and studio setups. Optional Reactor Control footswitch support, with wired or wireless operation, adds hands-free command for stage performance.

Positive Grid Reactor 50: Redefining Intelligent Amplification

The Positive Grid Reactor 50 brings together the immediacy of a traditional 1x12” combo and the creative flexibility of AI-assisted tone shaping in a single performance-ready platform. From late-night practice sessions to full-volume rehearsals and studio tracking, it adapts without losing its dynamic character or expressive response. With intelligent tone generation, tactile control and modern connectivity working together, the Positive Grid Reactor 50 reimagines what a modern guitar combo amp can be.

Positive Grid Reactor 50W 1x12" AI-Powered Guitar Combo Amp: FAQ

What makes the Positive Grid Reactor 50 different from a traditional modeling amp?
Reactor 50 combines Positive Grid’s BIAS X modeling engine with AI-driven Agentic DSP technology that allows players to generate and refine tones using text prompts, audio references and conversational adjustments. Instead of relying entirely on static presets, Reactor 50 creates and adapts tones dynamically through the Reactor app.

Can the Reactor 50 be used for both home practice and rehearsals?
Yes. Selectable wattage settings (1W, 25W and 50W) allow Reactor 50 to adapt to low-volume practice, studio work and rehearsal environments while maintaining responsive feel and tonal consistency.

Does the Reactor 50 include onboard effects and amp models?
Yes. Reactor 50 includes multiple amp voicings along with onboard drive, compression, gate, modulation, delay and reverb effects that can be adjusted directly from the amp or edited more deeply through the Reactor app.

Can the Reactor 50 connect directly to recording or live systems?
Yes. Reactor 50 includes USB-C audio interface functionality, MIDI In, effects loop, Bluetooth, line out and headphone out connectivity for integration with recording setups, practice rigs and live performance systems.