[Scheduled for July Release] "Learning Intelligent Guitar Amplifier" Positive Grid Announces New Product "REACTOR".

Positive Grid is a US-based guitar amplifier and software brand with the vision of "expanding the possibilities of music through technology." Since its founding, it has led the industry with high-precision amplifier modeling technology. Its smart guitar amplifier "Spark series," which applies this technology to hardware, has received high praise from guitarists worldwide and has established an unshakable position as the top model for practice amplifiers.

Now, the company has condensed its accumulated technology and know-how to propose a new form of guitar amplifier. The new product, the intelligent guitar amplifier "REACTOR," is a classic live guitar amplifier equipped with an AI sound engine that builds the tone you envision based on text, images, and audio.

REACTOR transcends the boundaries of traditional guitar amplifiers, instantly providing guitarists with the tone they imagine.

Product Overview

Imagination Unleashes the Limits of the Amplifier.

REACTOR is a 1x12 combo amplifier equipped with Amp Intelligence™. Amp Intelligence™ is an AI sound engine that builds the tone you envision based on text, images, and audio. It creates signal chains according to the desired tone or builds unique amplifiers that do not exist elsewhere. Output can be selected from 50W or 100W, providing consistent tone regardless of volume.

Main Features:

Amp Intelligence™: Agentic AI Creates Tone

Equipped with the latest engine that has analyzed over 1 million tones and hundreds of amplifier designs at the circuit level. By combining characteristics of different amplifiers and making deep parameter adjustments, users can create completely original amplifiers unique to them.

Tone Capture: Three approaches via prompt (text), image, and audio. The AI agent instantly generates tones. Furthermore, you can refine the tone to your ideal through dialogue with the AI.

TEXT TO TONE: Instruct the name of a guitarist or the desired sound via text. The guitar tone is automatically constructed from there.

IMAGE TO TONE: Convert photos of pedalboards or inspiring images into actual tones.

AUDIO TO TONE: Analyze audio and automatically construct a matching guitar tone.

*Instructions to the AI are made using the dedicated "REACTOR App."

"Tone Memory" that Learns Your Taste

Learns the user's sound creation (words, inputs, fine-tuning) and optimizes the sound with each use. Like a guitar tech, it quickly and appropriately provides the ideal tone.

No Compromise on Sound: Overwhelming Sound on Stage and at Home

Equipped with a custom 12" speaker in a cabinet designed specifically for guitar amplifiers. Available in 50W and 100W models. Both models allow output selection from maximum (50W or 100W), 25W, and 1W. Maintains consistent rich tone and presence regardless of volume, allowing for the best sound on stage and at home.

Intuitive Instant Control

Instantly access 6 amplifier categories with one knob on the panel. Additionally, AI-driven Push/Smooth and Heat (+/-) switches bring out the desired tonal nuances.

Optional REACTOR Control for Footswitch Operation

A dedicated foot controller for REACTOR. 6 switches and 2-mode switching enable hands-free operation during performance. USB-C rechargeable with over 40 hours of operation, compact design compatible with pedalboards.

View Details

Simultaneous Release (Optional)

REACTOR Control: Genuine Foot Switch for REACTOR Amplifier

REACTOR Control is a foot controller designed exclusively for the REACTOR guitar amplifier. It enables real-time footswitch control without interrupting your focus on playing. 6 footswitches allow for preset switching, effect on/off, and effect loop operation. Adding an expression pedal enables real-time control of volume, wah, etc. Supports both Bluetooth wireless connection and cable connection for stable performance in unstable environments like stages.

View Details

Product Specifications

REACTOR 50 / REACTOR 100

Audio Specifications
Power Amplifier Rated Output: REACTOR 50: 50W / REACTOR 100: 100W
Power Control: REACTOR 50: 50W / 25W / 1W, REACTOR 100: 100W / 25W / 1W
Speaker: REACTOR 50: 1 x 12" Custom Speaker, 4Ω / REACTOR 100: 1 x 12" Custom Speaker, 8Ω
Power Supply: AC 100–240V, 50/60Hz

Amplifier & Effects

Factory Amp Models: 24 models (for electric guitar) + Create custom amps via app

Built-in Effects: 27 effects (Noise Gate, Compressor, Distortion, Wah, Modulation, EQ, Delay, Reverb)

Presets: 8 (fully customizable)

Signal Chain: Selectable up to 8 effects + 1 FX Loop + 1 Amp Model

Built-in Tuner: Guitar tuner with LED display

Controls & Inputs/Outputs

Guitar Input: 1/4" x 1

Power Amp Input: 1/4" x 1

REACTOR Control Input: 1/4" x 1

Headphone Output: 1/8" x 1

Line Output (Mono): 1/4" x 1

FX Loop Send/Return: 1/4" each x 1

MIDI Input: DIN 5-pin x 1

Wireless / USB

Bluetooth: 5.0

USB Audio: 1 Input x 2 Outputs, 24-bit / 48kHz (compatible with macOS and Windows)

Software

REACTOR App (compatible with iOS and Android)

Main Functions: Detailed editing of amp and effects, preset management, sharing and downloading presets via ToneCloud®, creating tones from text, audio, and images

Dimensions / Weight

Dimensions: REACTOR 50: 460 x 240 x 418 mm, REACTOR 100: 530 x 251 x 470 mm

Weight: REACTOR 50: 10.7 kg, REACTOR 100: 13.9 kg

Included Items

REACTOR 50/100 Amplifier, Power Cord, Quick Start Guide, Safety Instructions Card

REACTOR Control

Power Supply

Input Power Specifications: DC 5V/2A (USB)

Battery: Built-in 750mAh rechargeable lithium-ion battery

Charging Time: Approx. 7.5 hours

Operating Time: