Positive Grid Reactor Amps: Amp Intelligence with AI Tone Creation!
Making amp tone creation simple using AI
The new Positive Grid Reactor series is available in 50W and 100W formats, along with an optional Reactor Control Footswitch. They use Positive Grid’s proprietary Amp Intelligence sound engine to create a huge range of amp tones and more!
Contents – Positive Grid Reactor Amps
Reactor
This new line of Positive Grid Reactor combo amps is designed for stage and studio, available on launch in 50W and 100W versions loaded with a custom-voiced 12″ speaker. The cabs are made of wood, so these models should be perfect for gigs and sturdy enough to take to the studio to lay down tracks.
They come with 24 amplifier models and 27 onboard effects, and can run up to 8 effects simultaneously.
Both amps are the same in terms of features and layout; the 100W model just has more clean headroom and volume.
Amp Intelligence
Reactor’s Amp Intelligence uses circuit-level analysis to replicate the distinct characteristics of over 200 classic amplifiers. By measuring components like gain stages, transformers, bias points, and harmonic response, the system accurately reproduces the sound and dynamic behaviour of the original hardware.
Positive Grid has a pretty solid reputation for making affordable, versatile guitar amps with AI/digital modelling, so these latest models should be perfect for players who require many amp styles and amp tones, all in one compact combo format amp setup.
Simple to Use
The basic amp panel contain all the standard controls, including gain, EQ, master volume and effects. There are six amp styles accessible from the top panel, dedicated buttons and plenty of onboard controls, including mod switches labelled Heat and Push. Use Heat for harmonic tightening, and Push/Smooth to adjust presence and top-end warmth.
Reactor App
Their Reactor App then does a lot of the heavy lifting and allows users to access signal chain editing and AI tone generation via a drag-and-drop format. Anyone who has experienced the Spark system of amps will be familiar with this style of tone building.
Reactor Control Footswitch
The Reactor Control Footswitch is sold separately and allows users to access the amp’s various tones, effects, etc. It has six buttons and can be connected via a wired or wireless connection. Possibly an accessory that you will require to get the most out of these amps in a live situation. They also support expression pedal input.
Creator Hub’s Tone Capture
This is the part most users can really experiment with, as it gives you access to the AI tone creation side of these amps. For example, it allows you to upload an audio sample, and the engine recreates the exact guitar tone.
Or you could upload a photo of a pedalboard rig or an amp, and it will translate that image data into a digital signal, which is impressive if it works well.
Finally, you can type descriptions, and it will generate the tone you have described. So text in the style, artist name, etc., and it will design that tone for you!
Tone Memory
Tone Memory learns your preferred amp settings, EQ and then uses these to adjust the tone engine to your tastes.
The amp has a USB-C audio interface output (24-bit/48kHz), a cab-emulated line out, a power amp input (for using with external amp modellers), an effects loop, a MIDI input, and a headphone output. WiFi and Bluetooth connectivity are built in for app connectivity and any future updates to firmware.
Price & Availability
The new Positive Grid Reactor series is available now at Thomann. The Reactor 50W is priced at €349, the Reactor 100W is priced at €449, and the Reactor Control footswitch is priced at €149.





