The Bose S1 Pro+ is a wireless PA system that's designed to take your music with you wherever you go. This speaker has a built-in handle for easy transport to a backyard, bar, or park and many connectivity options to pair up your microphones, guitars, and other instruments. It's compatible with Bose's Wireless Transmitter technology, so you can connect wireless instruments, too. The integrated three-channel mixer lets you adjust the sound of your instruments accordingly, and there are many features on hand to make the most of your next performance.
Our Verdict
The Bose S1 Pro Plus is fair for music. This speaker is designed with musicians in mind, offering many connectivity options for microphones, guitars, and more. The three-channel mixer and other features let you adjust the sound of these instruments accordingly, which is a cool touch. If you just want to listen, you can always pair up a smartphone to stream audio wirelessly. With a balanced sound out-of-the-box, voices and lead instruments clearly and accurately reproduce. Its Auto EQ tool ensures you get the best sound no matter how you position the speaker. It can't bring the deep rumble in the low-bass like other premium speakers.
- Lots of connectivity options for instruments.
- Gets loud.
- Some compression at max volume.
- Lacks some low-bass.
The Bose S1 Pro Plus isn't designed for watching movies, but if you want to watch a video from a paired smartphone, it can get the job done. There's relatively low latency with iOS and Android devices, so there aren't any lip-synching issues with dialogue-heavy videos. Voices are reproduced with clarity, too, so it's easy to follow along with the conversation. This speaker doesn't bring as much thump and rumble in the low-bass as other models, so you don't get a very cinematic feel with action-packed content.
- Gets loud.
- Auto EQ feature to optimize sound.
- Some compression at max volume.
- Lacks some low-bass.
The Bose S1 Pro Plus is great for podcasts. You can easily stream audio from your mobile devices to the speaker via Bluetooth or connect your phone over an AUX input. The clear and accurate reproduction of voices in the mix ensures you can follow along with the conversation in your favorite shows. Since it gets loud, too, you can crank up the volume when you listen in larger rooms. Plus, the Auto EQ feature automatically optimizes the speaker's sound based on how you position it in your room, which is a cool touch.
- Gets loud.
- Auto EQ feature to optimize sound.
- Some compression at max volume.
This speaker doesn't support voice assistants.
The Bose S1 Pro Plus is a decent choice to play music outside. While it isn't rated for dust or water resistance, it boasts a solid and sturdy build, with a built-in handle for easy transport. You can position it vertically or horizontally, depending on the needs of your space, and tilt it up or sit it flat to get the best possible sound. The Auto EQ tool automatically optimizes the speaker's output based on how you position it. The speaker gets loud, too, so you can easily fill up your backyard with your favorite tunes.
- Lots of connectivity options for instruments.
- Gets loud.
- No rating for dust or water resistance.
- Some compression at max volume.
Changelog
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Updated Jul 15, 2025:
The App section has been updated to mention the LG xboom Stage 301.
- Updated Sep 08, 2023: Review published.
- Updated Sep 05, 2023: Early access published.
- Updated Aug 28, 2023: Our testers have started testing this product.
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Differences Between Sizes And Variants
The Bose S1 Pro Plus is available in Black, and you can see the label for the model we tested here.
If you encounter another version of this speaker, let us know in the discussions, and we'll update the review.
Popular Speaker Comparisons
The Bose S1 Pro Plus is a wireless PA system with a similar design to the Bose S1 Pro System. They're both portable Bluetooth system speakers designed for use with microphones and other instruments. However, the Plus adds monochrome screens to its control panel, making it even easier to see various settings as you adjust them. This version gets louder, too, and it supports Bluetooth version 5.0.
You can also check out our recommendations for the best-sounding Bluetooth speaker, the best speakers for parties, and the best Bluetooth speakers for bass.
The Bose S1 Pro+ is better than the Bose S1 Pro System. These speakers are a similar size and offer a similar design. However, the Pro+ has monochrome screens that offer excellent feedback as you adjust various instruments and other settings. It gets louder, too, and it supports Bluetooth version 5.0. Plus, its battery life lasts a bit longer.
The JBL PartyBox 310 is better for music than the Bose S1 Pro+. The JBL has a unique design with customizable RGB lights that may be more suitable for some users. Plus, it can reproduce a more extended low bass, so you get more thump and rumble in the mix. Its battery life is longer, too. While both speakers let you connect instruments like microphones, the Bose has a few more settings for this use. The Bose is smaller, too.
The JBL PartyBox 710 is a better speaker for music than the Bose S1 Pro+. The JBL is a much larger speaker, and it can reproduce a more extended low-bass to bring more thump and rumble to the mix. The more portable Bose may be more suitable for some users. The Bose is geared towards musicians, too, so while both speakers have microphone and guitar inputs, the Bose offers more customization features to make the most of these devices.
The Bose S1 Pro+ and the JBL PartyBox 300 both come with microphone and guitar inputs. However, the Bose is better suited for musicians. It comes with more customization tools to make the most of these devices and a companion app for easier control. It's smaller and more portable, too. If you're looking to listen to music, the JBL is still a good choice, though, and it even comes with RGB lights to set the mood.
Test Results
The Bose S1 Pro Plus is an all-black speaker that's a similar size to the Bose S1 Pro. There are four different ways that you can position it: vertically or horizontally, flat or tilted up. You can see how this works in the video here. As you adjust the speaker, you can also rotate the Bose logo counterclockwise accordingly to keep a sleek look. There's also a standard 35 mm pole cup mount in case you want to use it with a speaker stand.
The Bose S1 Pro Plus is portable. Despite its larger size, you can still carry it in one hand thanks to the built-in handle. It's battery-powered, too, meaning it doesn't need to stay plugged into a power outlet when you use it. It does take up a little bit more room if you tilt it back, though.
The Bose S1 Pro Plus is mostly made of plastic, which feels sturdy and solid. The metal grille in front of the speaker helps to protect the drivers inside, too. The built-in handle is comfortable to hold and large enough for bigger hands. A rubber flap also covers the Wireless Transmitter charging ports to keep out dust, which you can see here. It's not rated for dust or water resistance, so exercise caution when using it outdoors.
The Bose S1 Pro Plus's controls are great, and they come with lots of different features to help you adjust its performance. There are three dials next to each channel with a small (0.8in by 0.8in) monochrome display to show you the settings as you adjust them. Channels 1 and 2 are designed for microphones, instruments, and Wireless Transmitters, while Channel 3 is for AUX and Bluetooth, and the controls are designed accordingly. Press down on any dial to control that channel's volume, bass, and treble. On Channel 1 and 2, you can also control reverb. Hold the control dial to get access to additional settings:
Channel 1 and 2:- ToneMatch (Off/Microphone/Instrument): Adjusts the EQ of an instrument to preserve its natural sound. The presets are designed for a handheld microphone or acoustic guitar, and you can customize presets in the app for different instruments.
- Insert (Auto/Off): Controls the effects loop functionality for a channel. When turned on, you can connect your effects units or pedals to the channel input while using a wireless transmitter for your source.
- Wireless (Auto/Off): Turns on and off the wireless transmitter port for a channel.
- Expanders (On/Off): Lets the system reduce the volume of low-level background noise for a channel.
- Auto-Off (On/off): Activates the auto-off timer, which automatically powers the speaker down after you haven't adjusted any controls for four hours.
- Livestream (On/Off): Lets you send audio from the speaker to a computer so you can record it or perform live online.
- Sub EQ (On/Off): Optimizes the system EQ when a subwoofer is connected to the line out port.
- Expanders (On/Off): Lets the system reduce the volume of low-level background noise for a channel.
Overall, the dials are easy to press and offer some resistance to enable fine-tuning various settings. The monochrome displays show the volume level and various settings like LiveStream when you enable them. There's also a Bluetooth button for pairing. You can see a video of the controls here.
The Bose S1 Pro Plus has decent frequency response accuracy. It has an Auto EQ setting that's turned on by default, automatically adjusting the speaker's sound based on its orientation. As a result, you get an optimal listening experience for each of the four positions available.
We tested the speaker in a vertical orientation, sitting flat. The overall sound is quite balanced, especially in the mids, where most voices and instruments reproduce. The touch of extra emphasis in the high-bass also adds some warmth to the mix. There isn't a huge difference in the speaker's sound when you set it up in any of the other positions, as you can see from the graph here. Additionally, this graph shows you a comparison of the speaker's performance when it's plugged in or using battery power over both a Bluetooth and an AUX connection. As you can see, there's very little difference in the speaker's performance here. As a result, you can set it up in the most convenient way for you while enjoying a consistent sound.
The Bose S1 Pro Plus is a mono speaker, so it has to downmix stereo content. However, this isn't a huge deal if you plan to use it with a microphone or guitar since these instruments only require one channel. The speaker's directivity isn't the most impressive, so you don't get a consistent sound when standing behind the speaker. Again, this may not be a huge deal, depending on how you use it.
The Bose S1 Pro Plus gets very loud. It has no trouble filling larger and more open spaces with sound. There's some compression as you push it to max volume, which impacts the clarity of audio reproduction if you crank up the volume extra loud.
Our measured battery life of 10.8 hours is pretty consistent with the manufacturer's advertised battery life of eleven hours. You can use the auto-off feature to automatically shut off the device after four hours without playing audio, which helps to conserve its battery life. You can also use it over AC if you don't want to worry about running out of battery.
This speaker doesn't support voice assistants.
The Bose Music app is a handy tool that gives you access to many of the same features available through the controls on your phone. You can adjust each channel's bass, treble, and reverb, and turn on settings like ToneMatch and SubEQ for a sub that you can purchase separately. Plus, you can create a custom ToneMatch EQ for various instruments, which is a cool touch, and the app also offers a list of different instrument presets and specific manufacturer instrument presets. You can even save custom Scenes to recreate a preset without having to retune your speaker each time. The app also lets you manage connected Bluetooth devices and stereo pair the speaker to compatible devices. You can see a video of the app here.
On the other hand, if you plan to set up music playback for a party, complete with DJ and lighting effects, the capabilities of the LG xboom Stage 301 and its app might suit you better. That said, the dedicated mixing controls are more professional on the S1 Pro+.
This speaker offers many wired connectivity options designed with musicians in mind.
Channel 1 and 2:- 2x Wireless Transmitter Charging port: You can purchase the wireless transmitters from Bose separately if you want to use wireless instruments.
- 2x 6.35mm TS/TRS and XLR port (Balanced/Unbalanced combined): Allows you to connect instruments over a wired connection.
- 6.35 TS/TRS balanced mono line input: Connect a line-level audio source like a mixer or instrument effect.
- 3.5mm AUX stereo line input: Connect a line-level audio source like a laptop.
- USB-A Charging port (out only): Lets you charge a mobile device using the system battery or AC power.
- USB-C port: Lets you connect to your computer for Live Stream mode or system updates.
- Line out XLR: Use an XLR cable to connect a post-mix line-level output to another system.
This Bluetooth-compatible speaker can connect to up to two devices simultaneously, making it easy to switch between a laptop and a smartphone as your audio source. Its latency is relatively low, too, meaning you can stream videos on your paired phone without noticing too much of a delay. Some apps compensate for latency differently, though.