Positive Grid, known for its innovative digital guitar amplification solutions, has unveiled its latest offering: the Reactor series of 1x12” combo amplifiers. These new amps mark Positive Grid's expansion beyond its popular Spark line, introducing ambitious technological advancements designed to redefine the user experience. The Reactor series is available in both 50-watt and 100-watt configurations, positioning themselves as direct competitors to established lines like the Boss Katana and Blackstar ID:X.
What sets the Reactor amps apart is their proprietary 'Amp Intelligence' engine, which builds upon the foundational concepts of Positive Grid's Bias X plugin. This technology aims to create amplifier tones from the ground up, leveraging AI capabilities to generate unique sounds based on various inputs. The system promises to deliver a dynamic and responsive playing experience, adapting to the nuances of a guitarist's technique.
The Reactor Amp Intelligence Engine
The core innovation of the Reactor series lies in its 'Amp Intelligence' system, which goes beyond traditional amp modeling. Instead of merely replicating existing amplifier sounds, it constructs tones based on user-defined parameters. This engine draws inspiration from the prompt-based tone generation featured in the Bias X plugin, offering guitarists a novel way to explore and create their signature sounds. The companion Reactor app is central to this functionality, allowing for the creation of dedicated signal chains in mere seconds.
The app offers three distinct modes for sound generation: text prompts, image analysis, and audio snippet input. This multifaceted approach enables musicians to translate their creative ideas into sonic realities. Whether a guitarist has a specific sound in mind described in words, visualized in an image, or heard in a brief audio clip, the Reactor system can translate it into a custom amplifier tone. Furthermore, the system features a unique Tone Memory function that continuously learns and adapts to the player's individual style, making subtle tonal adjustments over time to ensure the amp consistently sounds like the player themselves.
Onboard Controls and Effects
Beyond its intelligent engine, the Reactor amps offer a comprehensive set of onboard controls for immediate sound shaping. Each amp features an Amp dial with six distinct flavor settings: Clean, Warm, Grit, Crunch, Hi-Gain, and Extreme. Complementing this are standard Gain and Master volume controls, a versatile three-band EQ, and an integrated effects suite. This suite includes essential effects like a noise gate, compressor, overdrive, delay, reverb, and modulation, allowing for a wide range of sonic palettes without external pedals.
Adding further control are two unique mini-switches: Push/Smooth and Heat. The Push/Smooth switch, with its three-way operation, offers tonal sculpting to enhance presence or introduce warmth. The Push mode is designed to add bite for cutting through a mix without altering the gain level, while Smooth offers a warmer tonal characteristic. The Heat control, a five-stage switch, profoundly impacts the amp's response, influencing attack and harmonic richness. Higher heat settings increase responsiveness, while lower settings provide a more elastic and open feel.
Connectivity and Future-Proofing
The rear panel of the Reactor amps is equipped with extensive connectivity options for modern musicians. A USB-C port allows for direct connection to Digital Audio Workstations (DAWs), facilitating seamless recording and integration into digital workflows. For silent practice or direct output, a 3.5mm headphone jack is included, alongside a 1/4” line-out that features an integrated cabinet simulator, ensuring a professional sound when bypassing the physical speaker.
For expanded control and functionality, an input for the separately sold Reactor footswitch is present. This footswitch can operate wirelessly via Bluetooth and includes inputs for an expression pedal and MIDI, offering further customization for live performance and studio use. Additionally, the amps can function as Bluetooth speakers and feature built-in Wi-Fi, enabling over-the-air firmware updates without the need for a computer connection, ensuring the amp remains up-to-date with the latest features and improvements.
Pricing and Availability
The Positive Grid Reactor 50W model is priced at $349, with the more powerful 100W version available for $449. The accompanying Reactor footswitch is priced at $149. These price points are highly competitive, offering significant technological value for the cost. Early reviews have highlighted the ambition and innovation behind the Reactor series, recognizing it as a significant addition to Positive Grid's product ecosystem and a worthy successor and complement to the popular Spark amplifiers.
Impact Analysis
The introduction of the Positive Grid Reactor series, with its AI-driven 'Amp Intelligence,' signifies a potential paradigm shift in guitar amplifier design. By moving beyond traditional modeling to generative tone creation, Positive Grid is democratizing advanced sound design and personalization. This technology could lower the barrier to entry for guitarists seeking unique tones, potentially influencing competitors to adopt similar AI-driven features. The adaptive 'Tone Memory' also suggests a future where amplifiers are not static tools but dynamic partners that evolve with the musician, fostering a deeper connection between player and instrument.
