{"id":1790706,"date":"2026-06-05T18:06:09","date_gmt":"2026-06-05T22:06:09","guid":{"rendered":"https:\/\/www.sweetwater.com\/sweetcare\/?post_type=articles&#038;p=1790706"},"modified":"2026-06-05T18:06:12","modified_gmt":"2026-06-05T22:06:12","slug":"positive-grid-reactor-combo-amplifier-quickstart-guide","status":"publish","type":"articles","link":"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/","title":{"rendered":"Positive Grid Reactor Combo Amplifier Quickstart Guide"},"content":{"rendered":"\n<p>The <a href=\"https:\/\/www.sweetwater.com\/store\/detail\/Reactor100C--positive-grid-reactor-100-100-watt-1-by-12-inch-combo-amplifier\" target=\"_blank\" rel=\"noreferrer noopener\">Reactor 100<\/a> and <a href=\"https:\/\/www.sweetwater.com\/store\/detail\/Reactor50C--positive-grid-reactor-50-50-watt-1-by-12-inch-combo-amplifier\" target=\"_blank\" rel=\"noreferrer noopener\">Reactor 50<\/a> are Positive Grid\u2019s next-generation digital guitar combo amplifiers for home, studio, and stage, powered by Amp Intelligence (AI). You can play your amplifier right out of the box with its 8 presets and 6 amplifier models accessible from the top panel.<\/p>\n\n\n\n<p>When you connect the amplifier to the Reactor app for iPhone, iPad, and Android, you unlock a world of additional amplifier models and effects. As you\u2019d expect, with the app you can edit, save, and share presets. With the new Creator Hub feature, you can write prompts for Positive Grid\u2019s AI to create custom amplifier models, signal chains, and more.<\/p>\n\n\n\n<p>Let\u2019s get started.<\/p>\n\n\n\n<ul><li><strong><a href=\"#Positive-Grid-Reactor-Controls-&amp;-Connections\">Positive Grid Reactor Controls &amp; Connections<\/a><\/strong><\/li><li><strong><a href=\"#Download-the-User-Manuals\">Download the User Manuals<\/a><\/strong><\/li><li><strong><a href=\"#Positive-Grid-Reactor-App\">Positive Grid Reactor App<\/a><\/strong><\/li><li><strong><a href=\"#Positive-Grid-Reactor-Firmware-Update\">Positive Grid Reactor Firmware Update<\/a><\/strong><\/li><li><strong><a href=\"#Positive-Grid-Reactor-Control-Footswitch\">Positive Grid Reactor Control Footswitch<\/a><\/strong><\/li><li><strong><a href=\"#Sweetwater-Positive-Grid-Reactor-Demo-Video\">Sweetwater Positive Grid Reactor Demo Video<\/a><\/strong><\/li><li><strong><a href=\"#Positive-Grid-Reactor-YouTube-Tutorial-Playlist\">Positive Grid Reactor YouTube Tutorial Playlist<\/a><\/strong><\/li><\/ul>\n\n\n\n<h2 id=\"Positive-Grid-Reactor-Controls-&amp;-Connections\">Positive Grid Reactor Controls &amp; Connections<\/h2>\n\n\n\n<p>You can plug in your guitar and start playing the 8 presets on the Reactor right away. Select between the 6 amplifier models and adjust the gain and tone controls. For the effects programmed into a preset, you can turn them on and off individually.<\/p>\n\n\n\n<p>You can access a much wider palette of guitar tones when you connect your amplifier to the Reactor app on your mobile device; we\u2019ll get to that below.<\/p>\n\n\n\n<h3><em>Controls<\/em><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/reactor-top-panel-1920.jpg\"><img loading=\"lazy\" width=\"1024\" height=\"234\" src=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/reactor-top-panel-1920-1024x234.jpg\" alt=\"Positive Grid Reactor top panel\" class=\"wp-image-1790733\" srcset=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/reactor-top-panel-1920-1024x234.jpg 1024w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/reactor-top-panel-1920-300x69.jpg 300w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/reactor-top-panel-1920-768x176.jpg 768w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/reactor-top-panel-1920-1536x351.jpg 1536w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/reactor-top-panel-1920.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Positive Grid Reactor top-panel controls.<\/em><\/p>\n\n\n\n<h4>Power Switch<\/h4>\n\n\n\n<p>Turn the master volume knob all the way down before turning on the power.<\/p>\n\n\n\n<h4>Input<\/h4>\n\n\n\n<p>Plug in your guitar here.<\/p>\n\n\n\n<h4>Master Volume<\/h4>\n\n\n\n<p>Sets the overall volume for the amplifier\u2019s output both to the speaker and to the headphones.<\/p>\n\n\n\n<h4>Bluetooth &amp; Wi-Fi Indicator Lights<\/h4>\n\n\n\n<p>These two lights are off when not connected, blinking when in pairing mode, and solid when connected.<\/p>\n\n\n\n<p>Bluetooth is used to connect to the app on your phone and, optionally, to connect to the Reactor Control footswitch (sold separately).<\/p>\n\n\n\n<p>You can also stream practice tracks from your phone to your Reactor amplifier using a second, separate Bluetooth pairing operation.<\/p>\n\n\n\n<p>Learn more in the <a href=\"https:\/\/help.positivegrid.com\/hc\/en-us\/articles\/44504089090445-Bluetooth-Connection-Bluetooth-Audio\" target=\"_blank\" rel=\"noreferrer noopener\">Positive Grid Reactor User Guide > Bluetooth Audio<\/a>.<\/p>\n\n\n\n<p>Connecting your Reactor amplifier to Wi-Fi is only needed when the app notifies you that there is a firmware update to install.<\/p>\n\n\n\n<h4>Amp<\/h4>\n\n\n\n<p>Select between 6 amp models: <strong>Clean<\/strong>, <strong>Warm<\/strong>, <strong>Grit<\/strong>, <strong>Crunch<\/strong>, <strong>Hi-Gain<\/strong>, and <strong>Extreme<\/strong>.<\/p>\n\n\n\n<h4>*AI<\/h4>\n\n\n\n<p>The \u201c<strong>Amp Intelligence<\/strong>\u201d switches give you tonal options on your selected amp model. <\/p>\n\n\n\n<ul><li><strong>Push<\/strong> has 3 settings that modify the attack response. <\/li><li><strong>Heat<\/strong> has 5 settings to adjust feel, harmonics, and gain without changing volume.<\/li><\/ul>\n\n\n\n<h4>Bank Switch &amp; Select<\/h4>\n\n\n\n<p>The 2 buttons let you select from 2 banks of 4 presets, for a total of 8.<\/p>\n\n\n\n<h4>Amp Controls<\/h4>\n\n\n\n<p><strong>Gain<\/strong>, <strong>Bass<\/strong>, <strong>Middle<\/strong>, <strong>Treble<\/strong>, and <strong>Master<\/strong> let you adjust your currently selected amp model.<\/p>\n\n\n\n<h4>FX<\/h4>\n\n\n\n<p>There are 6 buttons to engage effects blocks in the signal chain of each preset: <strong>Gate<\/strong>, <strong>Compressor<\/strong>, <strong>Overdrive<\/strong>, <strong>Modulation<\/strong>, <strong>Delay<\/strong>, and <strong>Reverb<\/strong>.<\/p>\n\n\n\n<p>Tap a button to select its effect. Adjust its <strong>Level<\/strong> with the knob.<\/p>\n\n\n\n<p>For time-based effects, use the <strong>Tap<\/strong> button to set the tempo.<\/p>\n\n\n\n<p>Hold down an effects button to turn it on or off.<\/p>\n\n\n\n<p>You can also turn effects on and off using the <strong>Reactor Control footswitch<\/strong> unit, sold separately.<\/p>\n\n\n\n<p>Using the app on your phone, you can select from a variety of different effects within each block and program each effect\u2019s parameters.<\/p>\n\n\n\n<h3><em>Connections<\/em><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/reactor100-back-panel.jpg\"><img loading=\"lazy\" width=\"1024\" height=\"372\" src=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/reactor100-back-panel-1024x372.jpg\" alt=\"Positive Grid Reactor back panel\" class=\"wp-image-1790734\" srcset=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/reactor100-back-panel-1024x372.jpg 1024w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/reactor100-back-panel-300x109.jpg 300w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/reactor100-back-panel-768x279.jpg 768w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/reactor100-back-panel.jpg 1303w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Positive Grid Reactor back-panel connections.<\/em><\/p>\n\n\n\n<h4>Bluetooth Pairing Button<\/h4>\n\n\n\n<p>Tap this button to put your amp into Bluetooth pairing mode.<\/p>\n\n\n\n<h4>Power Control<\/h4>\n\n\n\n<p>Select full wattage (100 watts or 50 watts, depending upon your model), 25 watts, or 1 watt.<\/p>\n\n\n\n<h4>Foot Control<\/h4>\n\n\n\n<p>Use the <strong>Reactor Control<\/strong> jack to connect the optional Reactor Control footswitch unit with a TRS cable rather than Bluetooth.<\/p>\n\n\n\n<p>Connect a MIDI controller to the 5-pin DIN<strong> MIDI In<\/strong> port.<\/p>\n\n\n\n<p>There\u2019s a table of MIDI control change and program change commands in the <a href=\"https:\/\/help.positivegrid.com\/hc\/en-us\/articles\/44536008858509-MIDI-Control-Commands-Setup\" target=\"_blank\" rel=\"noreferrer noopener\">Postive Grid Reactor User Manual > MIDI Control &#8211; Commands &amp; Setup<\/a>.<\/p>\n\n\n\n<h4>Power Amp Input<\/h4>\n\n\n\n<p>Use a TS cable to connect an external modeler or preamp. The Reactor bypasses all internal amp modeling and effects and becomes a \u201cclean\u201d power amp and speaker. Only the master volume functions to control the power amp.<\/p>\n\n\n\n<h4>Output (Line Out, Headphones)<\/h4>\n\n\n\n<p>Connect <strong>Headphones<\/strong> with a 1\/8-inch plug. (Turn the master volume knob all the way down first.) The speaker output mutes automatically.<\/p>\n\n\n\n<p>Connect a 1\/4-inch TS cable for a <strong>Line Out<\/strong> to your mixer, interface, or monitor at fixed line level.<\/p>\n\n\n\n<h4>FX Loop<\/h4>\n\n\n\n<p>Connect to a pedalboard with external effects using 1\/4-inch TS cables using the <strong>Send<\/strong> and <strong>Return<\/strong> jacks. Using the Reactor app, you can insert the effects loop at any position in the signal chain and set the level.<\/p>\n\n\n\n<h4>USB-C &amp; the Positive Grid Reactor as an Audio Interface<\/h4>\n\n\n\n<p>Connect a USB-C data cable to your computer to use the Reactor as an audio interface with 1 output and 2 returns. (The Reactor signal chain is monaural.) On your Mac or Windows PC, you can select between 16-bit\/44.1kHz and 24-bit\/48kHz.<\/p>\n\n\n\n<p>If you are on Windows, then you must first download and install the Positive Grid Reactor ASIO driver for Reactor. Select your product and your download from the <a href=\"https:\/\/help.positivegrid.com\/hc\/en-us\/articles\/24274052636429-Download#reactor-50w\/100w\" target=\"_blank\" rel=\"noreferrer noopener\">Positive Grid Download page<\/a>.<\/p>\n\n\n\n<h2 id=\"Download-the-User-Manuals\">Download the User Manuals<\/h2>\n\n\n\n<p>The <a href=\"https:\/\/help.positivegrid.com\/hc\/en-us\/categories\/42319144713613-REACTOR-50W-100W\" target=\"_blank\" rel=\"noreferrer noopener\">Positive Grid manuals are available as webpages<\/a>, but you can also download PDFs for reference. On the <a href=\"https:\/\/help.positivegrid.com\/hc\/en-us\/articles\/24274052636429-Download#reactor-50w\/100w\" target=\"_blank\" rel=\"noreferrer noopener\">Positive Grid Reactor Download page<\/a>, download the manual for the amplifier and for the phone app.<\/p>\n\n\n\n<h2 id=\"Positive-Grid-Reactor-App\">Positive Grid Reactor App<\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><a href=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-App-Home-Page.jpg\"><img loading=\"lazy\" src=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-App-Home-Page-576x1024.jpg\" alt=\"Positive Grid Reactor App\" class=\"wp-image-1790735\" width=\"288\" height=\"512\" srcset=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-App-Home-Page-576x1024.jpg 576w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-App-Home-Page-169x300.jpg 169w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-App-Home-Page-768x1365.jpg 768w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-App-Home-Page-864x1536.jpg 864w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-App-Home-Page.jpg 896w\" sizes=\"(max-width: 288px) 100vw, 288px\" \/><\/a><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><em>Positive Grid Reactor app<\/em><\/p>\n\n\n\n<p>With the <strong>Reactor app<\/strong> for iPhone, iPad, and Android device, you can select between a wide variety of amp models and effects that you can\u2019t access with the Reactor amplifier\u2019s controls. Using the app, you can adjust the effects parameters in detail. You can create and store all the custom presets you like within the app and then load 8 at a time into the memory of the amplifier.<\/p>\n\n\n\n<p>The app also provides Positive Grid\u2019s groundbreaking AI function, the <strong>Creator Hub<\/strong>, which you can use to generate complete presets based on prompts describing the sound you want. You can do this by writing, speaking, or having the app analyze audio recordings or even photographs.<\/p>\n\n\n\n<p>Thus, you can create presets by the traditional method or the AI method. Any presets you save can be further refined and edited using the parameter knobs on the app.<\/p>\n\n\n\n<p>Learn more in the <a href=\"https:\/\/help.positivegrid.com\/hc\/en-us\/articles\/44385105624973-REACTOR-App-User-Guide\" target=\"_blank\" rel=\"noreferrer noopener\">Positive Grid Reactor App User Guide<\/a>.<\/p>\n\n\n\n<h3><em>Download the Reactor App<\/em><\/h3>\n\n\n\n<p>On your iPhone or iPad, download the <a href=\"https:\/\/apps.apple.com\/us\/app\/reactor-amp-intelligence\/id6755539496\" target=\"_blank\" rel=\"noreferrer noopener\">Positive Grid Reactor app from the Apple App Store<\/a>.<\/p>\n\n\n\n<p>On your Android device, download the <a href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.positivegrid.reactor\" target=\"_blank\" rel=\"noreferrer noopener\">Positive Grid Reactor app from the Google Play Store<\/a>.<\/p>\n\n\n\n<h3><em>Connect Your Reactor Amplifier to the Phone App<\/em><\/h3>\n\n\n\n<p>With Bluetooth enabled on your mobile device, launch the app. When you turn on the power on your Reactor amplifier, it will be in Bluetooth pairing mode. The app will automatically detect your amplifier.<\/p>\n\n\n\n<h3><em>Register Your Purchase<\/em><\/h3>\n\n\n\n<p>You\u2019ll be prompted to register your purchase when you log in to your Positive Grid account or when you create a new account. You need to be logged in to your account so you can download and share presets from Positive Grid and use the Creator Hub AI features.<\/p>\n\n\n\n<h3><em>Tone<\/em><\/h3>\n\n\n\n<p>On the Tone page, you can call up a preset and edit it by choosing an effect for each block and setting its parameters.<\/p>\n\n\n\n<h4>Effect Blocks<\/h4>\n\n\n\n<p>The default order of effect blocks is:<\/p>\n\n\n\n<p>Gate &gt; Compressor &gt; Overdrive &gt; Wah &gt; Equalization &gt; Amp Model &gt; Modulation &gt; Delay &gt; Reverb &gt; External Effects Loop<\/p>\n\n\n\n<p>You can freely rearrange the order of blocks by dragging and dropping.<\/p>\n\n\n\n<p>Tap on an effect block to pull up the parameters for the selected effect. Tap on the name of the block to see a menu of different effects; you can choose one to replace the current selection. For example, under \u201cModulation\u201d you can choose from Analog Chorus, Cloner Chorus, Classic Phaser, and Jet Flanger.<\/p>\n\n\n\n<h4>Amplifier Models &amp; Speaker<\/h4>\n\n\n\n<p>While the Amp knob on the Reactor amplifier has 6 positions, there are 24 amp models to choose from in the Reactor app. With the Creator Hub feature, you can design additional custom amp models.<\/p>\n\n\n\n<p>When you tap the Amp effect block, you can choose your model and see the same knobs available on the hardware for gain, tone controls, and master. Adjust them on the app and save them to a preset.<\/p>\n\n\n\n<p class=\"has-background\" style=\"background-color:#f3f2f1\"><strong>NOTE<\/strong>: Every amp model and preset on the Reactor is designed to use the Reactor\u2019s power amp into the physical 12-inch guitar amp speaker. If you use headphones or the Line Out or record digital audio over USB, then the Reactor adds a fixed virtual speaker-cabinet simulation to the output that matches the sound of the physical 12-inch speaker.<\/p>\n\n\n\n<h3><em>Creator Hub<\/em><\/h3>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><a href=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Creator-Hub.jpg\"><img loading=\"lazy\" src=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Creator-Hub-573x1024.jpg\" alt=\"Positive Grid Reactor App Creator Hub\" class=\"wp-image-1790737\" width=\"287\" height=\"512\" srcset=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Creator-Hub-573x1024.jpg 573w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Creator-Hub-168x300.jpg 168w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Creator-Hub-768x1373.jpg 768w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Creator-Hub-859x1536.jpg 859w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Creator-Hub.jpg 894w\" sizes=\"(max-width: 287px) 100vw, 287px\" \/><\/a><\/figure><\/div>\n\n\n\n<p class=\"has-text-align-center\"><em>The Positive Grid Reactor app\u2019s Tone Creator Hub page.<\/em><\/p>\n\n\n\n<p>On this page, there are 4 ways to create tones with AI prompts:<\/p>\n\n\n\n<ul><li>Describe It<\/li><li>Use a Photo<\/li><li>Use a Song<\/li><li>Fix My Tone<\/li><\/ul>\n\n\n\n<p>Here&#8217;s Positive Grid&#8217;s short demonstration of these tools.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"REACTOR - Creator Hub Walkthrough\" width=\"620\" height=\"349\" src=\"https:\/\/www.youtube.com\/embed\/RM4KDGvdu9g?wmode=transparent&amp;rel=0&amp;feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Positive Grid: Reactor &#8211; Creator Hub Walkthrough<\/em><\/p>\n\n\n\n<h3><em>ToneCloud<\/em><\/h3>\n\n\n\n<p>On this page, when logged in to your account, you can access the Positive Grid ToneCloud to download new presets, organized by category.<\/p>\n\n\n\n<h3><em>Settings<\/em><\/h3>\n\n\n\n<p>On this page, you can log in to your account, use the amplifier\u2019s tuner on-screen, and access Positive Grid\u2019s video tutorials and support pages.<\/p>\n\n\n\n<p>If you have a guitar with high-output pickups, select <strong>Hi-Z mode<\/strong>.<\/p>\n\n\n\n<p>You can also choose whether to mute the speaker when Line Out is connected, configure expression pedal settings, and perform a <strong>Factory Reset<\/strong> to restore the presets and settings to their default states.<\/p>\n\n\n\n<p>Here&#8217;s Positive Grid&#8217;s brief tutorial on using the Reactor app.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"REACTOR - App Overview\" width=\"620\" height=\"349\" src=\"https:\/\/www.youtube.com\/embed\/IWjZcpFaDv4?wmode=transparent&amp;rel=0&amp;feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Positive Grid Reactor App Overview Video<\/em><\/p>\n\n\n\n<h2 id=\"Positive-Grid-Reactor-Firmware-Update\">Positive Grid Reactor Firmware Update<\/h2>\n\n\n\n<p>From time to time, Positive Grid will provide a new firmware update that will fix bugs, may add new features, and will ensure compatibility with the latest version of the Reactor app. When you first connect your Reactor to the app, it will check online and notify you if a firmware update is needed.<\/p>\n\n\n\n<p>The firmware update is accomplished wirelessly. The procedure requires you to use the app on your mobile device, which is already connected to the internet and connected to your Reactor amplifier over Bluetooth, to configure the Reactor amplifier to connect to your Wi-Fi.<\/p>\n\n\n\n<p>When the app notifies you of an update, follow the instructions on-screen and enter the password for your Wi-Fi.<\/p>\n\n\n\n<p>Be patient during the firmware update, which will take several minutes. Do not unplug the power or disconnect anything until the app informs you that the firmware update is complete.<\/p>\n\n\n\n<p>Learn more in the <a href=\"https:\/\/help.positivegrid.com\/hc\/en-us\/articles\/44536441250317-REACTOR-50-100-Firmware-Update\" target=\"_blank\" rel=\"noreferrer noopener\">Positive Grid Reactor Amp User Guide > Firmware Update<\/a>.<\/p>\n\n\n\n<h2 id=\"Positive-Grid-Reactor-Control-Footswitch\">Positive Grid Reactor Control Footswitch<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Control.jpg\"><img loading=\"lazy\" width=\"1024\" height=\"689\" src=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Control-1024x689.jpg\" alt=\"Positive Grid Reactor Control footswitch\" class=\"wp-image-1790739\" srcset=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Control-1024x689.jpg 1024w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Control-300x202.jpg 300w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Control-768x517.jpg 768w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Control.jpg 1303w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Positive Grid Reactor Control footswitch.<\/em><\/p>\n\n\n\n<p>The <a href=\"https:\/\/www.sweetwater.com\/store\/detail\/ReactorCntrl--positive-grid-reactor-control-footswitch\" target=\"_blank\" rel=\"noreferrer noopener\">Positive Grid Reactor Control footswitch<\/a>, sold separately, is designed for the Reactor amp. You can connect it using a 1\/4-inch TRS cable or through Bluetooth.<\/p>\n\n\n\n<p>You can use the Reactor Control in two modes: to change presets; or to turn effects on and off individually and enable or disable the effects loop.<\/p>\n\n\n\n<p>The unit runs on an internal battery that you can charge with a 5-volt USB-C charger.<\/p>\n\n\n\n<p>The unit can be further expanded with an external expression pedal connected by a TRS cable. The expression pedal can be configured to control a wah effect when present in a preset, or it can control guitar volume.<\/p>\n\n\n\n<p>Calibrate your expression pedal via the Reactor app or by using the buttons on the unit itself.<\/p>\n\n\n\n<p>Here&#8217;s Positive Grid&#8217;s tutorial on setting up the Reactor Control.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"REACTOR Control - Quickstart Guide\" width=\"620\" height=\"349\" src=\"https:\/\/www.youtube.com\/embed\/3qgqHC1AyIE?wmode=transparent&amp;rel=0&amp;feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Positive Grid: Reactor Control &#8211; Quickstart Guide<\/em><\/p>\n\n\n\n<p>Learn more on the <a href=\"https:\/\/help.positivegrid.com\/hc\/en-us\/categories\/35951392487693-REACTOR-Control\" target=\"_blank\" rel=\"noreferrer noopener\">Positive Grid Reactor Control support page<\/a>.<\/p>\n\n\n\n<h2 id=\"Sweetwater-Positive-Grid-Reactor-Demo-Video\">Sweetwater Positive Grid Reactor Demo Video<\/h2>\n\n\n\n<p>Here\u2019s Sweetwater\u2019s Nick Bowcott.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"AI-curated Tones from a Combo Amp?! | Positive Grid Reactor 50 &amp; 100\" width=\"620\" height=\"349\" src=\"https:\/\/www.youtube.com\/embed\/egAIcAWyaY0?wmode=transparent&amp;rel=0&amp;feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Sweetwater Soundcheck: AI-curated Tones from a Combo Amp?! | Positive Grid Reactor 50 &amp; 100<\/em><\/p>\n\n\n\n<h2 id=\"Positive-Grid-Reactor-YouTube-Tutorial-Playlist\">Positive Grid Reactor YouTube Tutorial Playlist<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.youtube.com\/playlist?list=PLn1dIjtTNV0aB_-dk8cKs1Oh025Z360Kj\"><img loading=\"lazy\" width=\"1024\" height=\"677\" src=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Playlist-YouTube-1024x677.jpg\" alt=\"Positive Grid Reactor YouTube Playlist\" class=\"wp-image-1790741\" srcset=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Playlist-YouTube-1024x677.jpg 1024w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Playlist-YouTube-300x198.jpg 300w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Playlist-YouTube-768x508.jpg 768w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Playlist-YouTube-1536x1015.jpg 1536w, https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/Reactor-Playlist-YouTube.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Positive Grid Reactor YouTube Tutorial Playlist.<\/em><\/p>\n\n\n\n<p>Click on the image above to go to <a href=\"https:\/\/www.youtube.com\/playlist?list=PLn1dIjtTNV0aB_-dk8cKs1Oh025Z360Kj\" target=\"_blank\" rel=\"noreferrer noopener\">Positive Grid\u2019s tutorial playist on YouTube<\/a>, with a growing list of short videos that walk you through various functions with the Reactor amplifier and the app.<\/p>\n","protected":false},"featured_media":1790710,"template":"","categories":[523087,523088,523089,523090,523091,142726,523086,7],"tags":[625234,625237,85159,625233,625236,625235,101716],"storecat":[],"itemids":[593432,593431,593433],"manufacturers":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v17.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<meta name=\"description\" content=\"The Positive Grid Reactor combo amplifier and Reactor app for your phone unlock a new way to craft presets through AI with the Creator Hub.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Positive Grid Reactor Combo Amplifier Quickstart Guide - SweetCare\" \/>\n<meta property=\"og:description\" content=\"The Positive Grid Reactor combo amplifier and Reactor app for your phone unlock a new way to craft presets through AI with the Creator Hub.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/\" \/>\n<meta property=\"og:site_name\" content=\"SweetCare\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-05T22:06:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/20260514_Positive_Grid_Reactor_1600x838.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"838\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"10 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.sweetwater.com\/sweetcare\/#website\",\"url\":\"https:\/\/www.sweetwater.com\/sweetcare\/\",\"name\":\"SweetCare\",\"description\":\"Service and Support\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.sweetwater.com\/sweetcare\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/#primaryimage\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/20260514_Positive_Grid_Reactor_1600x838.jpg\",\"contentUrl\":\"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/20260514_Positive_Grid_Reactor_1600x838.jpg\",\"width\":1600,\"height\":838,\"caption\":\"Positive Grid Reactor Quickstart\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/#webpage\",\"url\":\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/\",\"name\":\"Positive Grid Reactor Combo Amplifier Quickstart Guide - SweetCare\",\"isPartOf\":{\"@id\":\"https:\/\/www.sweetwater.com\/sweetcare\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/#primaryimage\"},\"datePublished\":\"2026-06-05T22:06:09+00:00\",\"dateModified\":\"2026-06-05T22:06:12+00:00\",\"description\":\"The Positive Grid Reactor combo amplifier and Reactor app for your phone unlock a new way to craft presets through AI with the Creator Hub.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.sweetwater.com\/sweetcare\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Articles\",\"item\":\"https:\/\/www.sweetwater.com\/sweetcare\/articles\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Positive Grid Reactor Combo Amplifier Quickstart Guide\"}]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"description":"The Positive Grid Reactor combo amplifier and Reactor app for your phone unlock a new way to craft presets through AI with the Creator Hub.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/","og_locale":"en_US","og_type":"article","og_title":"Positive Grid Reactor Combo Amplifier Quickstart Guide - SweetCare","og_description":"The Positive Grid Reactor combo amplifier and Reactor app for your phone unlock a new way to craft presets through AI with the Creator Hub.","og_url":"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/","og_site_name":"SweetCare","article_modified_time":"2026-06-05T22:06:12+00:00","og_image":[{"width":1600,"height":838,"url":"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/20260514_Positive_Grid_Reactor_1600x838.jpg","type":"image\/jpeg"}],"twitter_card":"summary","twitter_misc":{"Est. reading time":"10 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebSite","@id":"https:\/\/www.sweetwater.com\/sweetcare\/#website","url":"https:\/\/www.sweetwater.com\/sweetcare\/","name":"SweetCare","description":"Service and Support","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.sweetwater.com\/sweetcare\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"ImageObject","@id":"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/#primaryimage","inLanguage":"en-US","url":"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/20260514_Positive_Grid_Reactor_1600x838.jpg","contentUrl":"https:\/\/www.sweetwater.com\/sweetcare\/media\/2026\/06\/20260514_Positive_Grid_Reactor_1600x838.jpg","width":1600,"height":838,"caption":"Positive Grid Reactor Quickstart"},{"@type":"WebPage","@id":"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/#webpage","url":"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/","name":"Positive Grid Reactor Combo Amplifier Quickstart Guide - SweetCare","isPartOf":{"@id":"https:\/\/www.sweetwater.com\/sweetcare\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/#primaryimage"},"datePublished":"2026-06-05T22:06:09+00:00","dateModified":"2026-06-05T22:06:12+00:00","description":"The Positive Grid Reactor combo amplifier and Reactor app for your phone unlock a new way to craft presets through AI with the Creator Hub.","breadcrumb":{"@id":"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.sweetwater.com\/sweetcare\/articles\/positive-grid-reactor-combo-amplifier-quickstart-guide\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.sweetwater.com\/sweetcare\/"},{"@type":"ListItem","position":2,"name":"Articles","item":"https:\/\/www.sweetwater.com\/sweetcare\/articles\/"},{"@type":"ListItem","position":3,"name":"Positive Grid Reactor Combo Amplifier Quickstart Guide"}]}]}},"_links":{"self":[{"href":"https:\/\/www.sweetwater.com\/sweetcare\/wp-json\/wp\/v2\/articles\/1790706"}],"collection":[{"href":"https:\/\/www.sweetwater.com\/sweetcare\/wp-json\/wp\/v2\/articles"}],"about":[{"href":"https:\/\/www.sweetwater.com\/sweetcare\/wp-json\/wp\/v2\/types\/articles"}],"version-history":[{"count":24,"href":"https:\/\/www.sweetwater.com\/sweetcare\/wp-json\/wp\/v2\/articles\/1790706\/revisions"}],"predecessor-version":[{"id":1790756,"href":"https:\/\/www.sweetwater.com\/sweetcare\/wp-json\/wp\/v2\/articles\/1790706\/revisions\/1790756"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.sweetwater.com\/sweetcare\/wp-json\/wp\/v2\/media\/1790710"}],"wp:attachment":[{"href":"https:\/\/www.sweetwater.com\/sweetcare\/wp-json\/wp\/v2\/media?parent=1790706"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sweetwater.com\/sweetcare\/wp-json\/wp\/v2\/categories?post=1790706"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sweetwater.com\/sweetcare\/wp-json\/wp\/v2\/tags?post=1790706"},{"taxonomy":"storecat","embeddable":true,"href":"https:\/\/www.sweetwater.com\/sweetcare\/wp-json\/wp\/v2\/storecat?post=1790706"},{"taxonomy":"itemids","embeddable":true,"href":"https:\/\/www.sweetwater.com\/sweetcare\/wp-json\/wp\/v2\/itemids?post=1790706"},{"taxonomy":"manufacturers","embeddable":true,"href":"https:\/\/www.sweetwater.com\/sweetcare\/wp-json\/wp\/v2\/manufacturers?post=1790706"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}