A compact wireless streaming speaker from Bluesound with BluOS, AirPlay 2, dual-band Wi-Fi, Ethernet, aptX Bluetooth and 25 W of bi-amplified power. An optional battery pack makes it portable.
Bluesound calls the Pulse Flex 2i the most flexible member of its Pulse family. It has one 3.5 inch woofer and one 1 inch tweeter, five preset buttons, optical and analogue inputs, a USB-A input and a headphone output.
Why you will love it
Compact sound with a bi-amplified design
Bluesound lists 25 W of total system power, bi-amplified: 20 W for the woofer and 5 W for the tweeter. The woofer is 3.5 inches (89 mm) and the tweeter is 1 inch (25 mm), in a sealed enclosure.
Frequency response is listed as 45Hz to 20kHz, with total harmonic distortion plus noise of 0.030%. Bluesound says an upgraded bass driver adds punch for its size.

BluOS streaming and AirPlay 2
The BluOS app controls the speaker and its music service integrations. Bluesound lists 17 or more music services, AirPlay 2 and support for Amazon Alexa voice control.
It plays MP3, AAC, WMA, WMA-L, OGG, FLAC, ALAC, WAV, AIFF and MQA files at 32 to 192kHz and 16 to 24 bit. Five hard buttons on the top can be set as presets in the app.
Wi-Fi, Ethernet and Bluetooth
Bluesound lists dual-band 802.11ac Wi-Fi and a 100BaseT Ethernet port. Bluetooth is built in with Qualcomm aptX, one-way (receive).
Inputs are a combo optical and 3.5 mm analogue input and a USB-A port for FAT32 drives. Bluesound includes a Toslink to 3.5 mm adaptor. There is a 3.5 mm headphone output.

Portable, mountable and multi-room
Bluesound's optional BP100 battery pack connects to the battery port on the back to make the Pulse Flex 2i portable. A built-in mounting thread works with the Bluesound WM100 wall mount.
Group it with other Bluesound players to play in sync across rooms. Bluesound says you can use two Pulse Flex 2i speakers as wireless rear channels with a Bluesound Pulse Soundbar and sub for surround sound.
Is it right for you?
A great fit if you…
- Want a small speaker that streams over Wi-Fi with BluOS and AirPlay 2
- Plan to build a multi-room Bluesound system
- Want to use a pair as wireless rear speakers
- Want the option of a battery pack
Worth knowing
- The battery pack is a separate Bluesound accessory
- Bluetooth is one-way (receive), so it plays from your device but does not send audio out
- Bluesound lists voice control with Amazon Alexa
- Control is through the BluOS app
Build your system
Bluesound says you can combine a pair of Pulse Flex 2i speakers with a Bluesound soundbar and sub for wireless surround sound.
- Soundbar: Use as rear channels with the Bluesound Pulse Soundbar+
- Subwoofer: Add the Bluesound Pulse Sub+
- Streamer: Add a Bluesound Powernode for a wired stereo system
- More from Bluesound: See the Bluesound range
Specifications
Audio
| Power output | 25 W total system power, bi-amplified (20 W woofer, 5 W tweeter) |
|---|---|
| Speakers | 1 x 3.5" (89 mm) woofer; 1 x 1" (25 mm) tweeter |
| Enclosure | Sealed |
| Frequency response | 45Hz - 20kHz |
| Distortion | THD+N 0.030% |
| Amplification | Digital |
| Processor | ARM Cortex-A9, 1 GHz |
Streaming and control
| Operating system | BluOS |
|---|---|
| File formats | MP3, AAC, WMA, WMA-L, OGG, FLAC, ALAC, WAV, AIFF, MQA |
| Sampling rates and bit depths | 32 - 192kHz; 16 - 24 bit |
| Music service integrations | 17+ |
| Third-party integrations | AirPlay 2 |
| Voice control | Amazon Alexa |
| Controls | Play/pause, volume, previous/next and 5 preset hard buttons |
Connections
| Wi-Fi | 802.11ac, dual-band |
|---|---|
| Ethernet | RJ45, 100BaseT |
| Bluetooth | Built in, Qualcomm aptX, one-way (receive) |
| Optical / analogue input | Combo Toslink / 3.5 mm |
| USB | Type A (FAT32); Type B (mini) for servicing |
| Headphone output | 3.5 mm stereo |
| IR | Front panel IR sensor |
| Power | Universal bi-pin AC cord input (100 - 240 V AC) |
Physical
| Dimensions (W x H x D) | 125 x 183 x 100 mm |
|---|---|
| Weight | 1.23 kg |
| Power consumption | 3 W idle, under 0.5 W standby |
| Finishes | Black or white |
Specifications from Bluesound's Pulse Flex 2i product page, data sheet and owner's manual, checked November 2026.
What is in the box
- Pulse Flex 2i
- 120 V AC and 230 V AC power cords
- Toslink optical to 3.5 mm adaptor
- Safety guide
- Quick setup guide
Questions people ask
Does it have AirPlay 2?
Yes. Bluesound lists AirPlay 2.
Can it run on a battery?
Yes, with Bluesound's optional BP100 battery pack, sold separately.
Can I use two as a stereo pair or as rear speakers?
Yes. Bluesound says you can pair two for stereo sound, or use two as wireless rear channels with a Bluesound soundbar and sub.
What inputs does it have?
A combo optical and 3.5 mm analogue input, a USB-A port and Ethernet.
Which voice assistant does it work with?
Bluesound lists Amazon Alexa.