I bought this speaker as a monitor and used it only once. It is practically brand new.

Bose S1 Pro+ Features:

• The ultimate portable PA for soloists, small acts, and event speakers
• Lightweight — just 14.4 lbs. — with a convenient carry handle
• Can be tilted, seated, or stand mounted (35mm pole mount)
• Works great as a wedge monitor or playback system, too
• Integrated OLED screens facilitate dead-simple operation
• No hotspots — wide dispersion and Auto EQ deliver even coverage
• ToneMatch technology offers one-touch vocal and acoustic guitar presets
• 2 channels with independent EQ and reverb
• Dedicated 3rd channel for aux input or stereo Bluetooth streaming
• Full wireless experience with the use of optional transmitters (sold separately)
• Livestream mode with USB-C
• FX loop for use with guitar effects and pedalboards
• Factory-installed Li-ion battery gives you hours of portable playback
• Compatible with the Bose app for easy wireless control

More powerful than ever

The Bose S1 Pro+ offers many advancements over its predecessor. For starters, it weighs a mere 14.4 pounds — you can likely carry it one-handed. It flaunts integrated OLED screens for dead-simple operation; plus, the displays rotate depending on the speaker's position. You'll benefit from a full wireless experience with the use of optional transmitters (sold separately), as well as compatibility with the Bose app. Stereo Bluetooth streaming is on tap, as is a livestream mode with USB-C. Finally, an FX loop is present on the S1 Pro+'s inputs for use with guitar effects and pedalboards.