The Next Evolution of Tone Sculpting
Boasting 50 watts of guitar-driven firepower and component-level modeling, the Reactor 50 is here to set the new standard for modeling amps. Driven by AI-powered Agentic DSP Amp Intelligence, the accompanying Reactor app, and a familiar top-panel control layout, you control every parameter, setting, and component to create your ultimate guitar tone. Dialing in a tone is as simple as describing the sound you're after or uploading an audio clip for Reactor to analyze. Reactor even responds to conversational tweaks. Once configured, the Reactor 50 explodes with touch-sensitive dynamics, courtesy of Positive Grid’s BIAS X engine and the custom-voiced 12-inch loudspeaker. A gamut of other features is yours to command, including eight recallable presets, six built-in effects with Tap Tempo, and a multi-watt power selection that allows the Reactor to adapt to any environment. You'll also receive an external effects loop for your own stompboxes, remote control options, Headphone Out, Line Out, and a USB-C audio interface for recording, ensuring the Reactor 50 is ready to tackle virtually any practice or performance situation. Primed for the ultimate tone-shaping experience, the Reactor 50 melds brains and brawn to deliver the best elements of sonic experimentation and high-octane performance.
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A command center at your fingertips
The Reactor 50 features an intuitive experience for dialing in your favorite tones. You get six amp models, from Clean to Extreme, along with Heat and Push-Smooth switches to refine the overall gain structure of the selected amp model. Six built-in effects transform your aural foundation into soaring soundscapes, twangy slapbacks, and mountaintop-style leads with ease, and the Reactor 50’s external effects loop integrates your existing pedals directly into the amp’s tone stack. Once you’ve sculpted your sonic masterpiece, it can be saved and recalled in one of eight presets.
Unlimited creative freedom with the Reactor app
The Reactor app, connected via Bluetooth on your smart device, is your gateway to complete creative expression. Every parameter on the Reactor 50 can be fine-tuned to perfection. Even more, you get access to Positive Grid’s AI-powered Agentic DSP Amp Intelligence to create profiles of your favorite gear or design a new sound entirely. Simple yet intuitive, the Reactor app offers three options to let your imagination soar:
- Text to Tone: Using the Reactor App’s chat prompt, simply type in your desired sound and the app gets to work. Need to make an update? The Reactor app responds to conversational tweaks, like, “Add compression," or “Less gain," making editing a simple endeavor.
- Audio to Tone: This feature analyzes any uploaded audio file, then uses timestamps, either automatically detected or manually specified, to build your rig of choice. Whether you upload an isolated guitar track or a full mix, the Reactor app will analyze every eccentricity of the tone to deliver an astonishingly accurate re-creation.
- Picture to Tone: Snap a photo of your favorite pedal. Capture the perfect sunrise. Upload a selfie. The Picture to Tone feature accepts any image and transforms it into a tapestry of sound befitting of the given image. When we put the Reactor 50 through its paces here at Sweetwater, we found that uploading a photo of a grizzly bear produced some gnarly, “fuzzy” results!
Stage-ready control
When it's time to take the stage, you can trust that the Reactor 50 will push more than enough power to keep up with your live band. Its 50-watt power section and custom 12-inch Reactor loudspeaker deliver authentic guitar sonics, with an emphasis on the low to low-midrange frequencies that ensure punchy tone and limit piercing highs. Sound engineers will also delight in the Line Out jack, which allows you to send your amp's signal directly to the venue's sound system, no miking required.
With the optional Reactor Control pedal, you can unlock instant access to all eight of the amp's presets and effortless effect switching. Moreover, the included MIDI input allows remote switching either with your own MIDI foot controller or via program change automation, ensuring the Reactor 50 can integrate seamlessly with larger audio and video productions.
Positive Grid Reactor 50 Features:
- 50W modeling amp with 8 recallable presets, USB-C audio interface, and AI-powered tone creation
- 6 stages of amp gain with Push-Smooth and Heat switches to dial in and refine your tone
- 12-in. custom-voiced speaker faithfully emits a wide frequency spectrum
- Intuitive control set lets you dial in your ideal sound with ease
- 6 built-in FX — Gate, Compression, Drive, Modulation, Delay, and Reverb — with Tap Tempo add color to your tone
- Reactor App offers access to parameter control, tone creation, and preset sharing within the Positive Grid community
- Agentic AI-powered DSP constructs amp models at the component level with exacting precision based on text, audio, or image input
- BIAS X engine and AI-powered Amp Intelligence deliver tube-like touch sensitivity
- External FX Loop accepts your favorite stompboxes or multi-FX units
- 50W/25W/1W power selection keeps your cranked sound intact at bedroom levels
- Line Out and Headphone Out for versatile performance and practice
- Remote control available via MIDI or the Reactor Control pedal (sold separately)