Frequently asked questions about REACTOR, including product features, versions, and availability.
Click any question to expand the answer.
Overview
What makes REACTOR different from other amps?
Traditional amps are built around presets and manual controls — you scroll through presets or adjust multiple knobs until you find a sound. This takes time and often involves trial and error.
REACTOR changes that workflow entirely. Using Amp Intelligence, you can:
- Describe a sound (Text to Tone)
- Play a reference (Audio to Tone)
- Use an image (Image to Tone)
REACTOR generates a complete amp and effects setup instantly.
At the same time, REACTOR is a full performance-ready amplifier:
- 50W or 100W power with a custom 12" speaker
- Responsive playing feel designed for home, studio, and stage
- Intuitive top-panel controls for immediate adjustments without the app
- Flexible I/O, FX loop, MIDI, and foot control support
The result: an amp that adapts to how you want to create, play, and perform.
See also: REACTOR Quick Start Guide
Who is REACTOR for?
REACTOR is designed for players who want fast, expressive tone creation — whether at home, in the studio, or on stage.
See also: REACTOR Quick Start Guide
Models & Buying
What's the difference between REACTOR 50 and REACTOR 100, and which one should I choose?
REACTOR is available in two versions — REACTOR 50 and REACTOR 100.
| Spec | REACTOR 50 | REACTOR 100 |
|---|---|---|
| Power | 50W | 100W |
| Speaker | 4 ohm | 8 ohm |
The main difference is power and headroom for different environments. Both deliver more than enough volume for practice and live performance.
Both models are powerful enough for most playing situations, including rehearsal and live use.
| If you need... | Choose... |
|---|---|
| Compact size, home/studio use, smaller spaces | REACTOR 50 |
| Maximum headroom, clean tones at high volumes, larger stages | REACTOR 100 |
Quick guide:
- Don't need maximum volume? → REACTOR 50 covers most use cases
- Want more power for bigger setups? → REACTOR 100
See also: Technical Specifications
Is REACTOR available worldwide?
Availability varies by region. Check Positive Grid's website or authorized retailers for availability in your area.
See also: Panel Overview
Do you offer a special price on REACTOR if I already own products like BIAS X or Spark 2?
We truly appreciate your support of Positive Grid products. At this time, REACTOR 50 and REACTOR 100 are not eligible for upgrade pricing or loyalty discounts based on ownership of other Positive Grid products.
Be sure to subscribe to our newsletter and follow our official channels to stay informed about future promotions and special offers.
Hardware & Compatibility
Can I use REACTOR for live performance?
Yes. REACTOR is designed for home, studio, and stage.
- REACTOR 50 — 50W output, ideal for most venues
- REACTOR 100 — 100W output, maximum headroom for large stages
Both models deliver professional-level volume and tone for live use.
See also: Panel Overview
Can I use headphones?
Yes. REACTOR includes a 3.5mm headphone output for silent practice.
The speaker is automatically muted when headphones are connected.
See also: Panel Overview
Can I play at low volume?
Yes. REACTOR includes selectable power levels:
| Power Setting | Use Case |
|---|---|
| 100W / 50W | Full power for live performance |
| 25W | Balanced for jam sessions or small venues |
| 1W | Home-friendly volumes for practice |
The amp maintains the same character, response, and feel across all power settings — your sound stays consistent whether playing quietly or at full volume.
Important: The Power Control switch only affects speaker output. It does not affect:
- Headphone output
- Line Out
- USB output
See also: Panel Overview
Is REACTOR compatible with Spark?
No. REACTOR is a separate product line.
| REACTOR | Spark | |
|---|---|---|
| App | REACTOR App | Spark App |
| ToneCloud | REACTOR ToneCloud | Spark ToneCloud |
| Presets | Not cross-compatible | Not cross-compatible |
| Footswitch | REACTOR Control | Spark Control / Spark Control X |
REACTOR and Spark are designed for different use cases and use separate ecosystems.
See also: ToneCloud
Can I use external pedals?
Yes. REACTOR includes an FX Loop (Send/Return jacks) so you can integrate external pedals directly into your signal chain.
The FX Loop position in the signal chain can be adjusted via the REACTOR App.
See also: Panel Overview
Does REACTOR support a footswitch?
Yes. REACTOR supports REACTOR Control, a dedicated foot controller with:
- Wired connection — 1/4" TRS cable for low-latency control
- Wireless connection — Bluetooth for cable-free operation
REACTOR Control lets you switch presets and toggle effects hands-free.
See also: REACTOR Control Setup & Usage
Does REACTOR support MIDI?
Yes. REACTOR includes a Din 5-pin MIDI Input for external MIDI controllers.
See also: MIDI Control - Commands & Setup
Does REACTOR have a looper?
No. REACTOR does not include a built-in looper in the amp or app.
REACTOR is designed around tone creation and performance. If you need a looper, you can use an external looper pedal via the FX Loop.
See also: Amp & Effect List
Can I use REACTOR as a USB audio interface?
Yes. Connect REACTOR to your computer via USB-C for:
- Recording — 24-bit / 48kHz, 1 In × 2 Out
- Firmware updates
Compatible with macOS and Windows.
See also: USB Recording
Can I stream audio to REACTOR via Bluetooth?
Yes. REACTOR supports Bluetooth 5.0 with:
- A2DP — Audio streaming (play backing tracks)
- BLE — App control
You can jam along to music from your phone while connected to the REACTOR App.
See also: Bluetooth Connection