B2 Wireless Speaker — Audioengine Skip to Content
Tech Specs

B2 Home Music System w/ Bluetooth aptX

If you’re looking for top-notch sound quality and flexible connectivity options, the B2 is the system for you. A premium powered system, the B2 speaker delivers high-fidelity stereo sound and connects to your music in seconds from any app or device. With wired and wireless inputs, the B2 connects quickly and easy via Bluetooth aptX or a single input for your turntables, tape decks, or other analog sources.

Pro Tip Maximize the B2's sound quality by connecting through Bluetooth, utilizing the B2’s built-in digital to-analog converter.

Technical Specifications

General Specifications

Powered Bluetooth aptX speaker

Amplifier Type
Class D

Power Output
60 W peak power total (15 W RMS / 30 W peak per channel), AES

2.75” aramid fiber woofers

0.75“ Silk dome tweeters

3.5 mm stereo mini-jack, Bluetooth


Input Voltages
100-240 V 50/60 Hz auto-switching

>95 dB (typical A-weighted)

Less than 0.05% at all power settings


Frequency Response
65 Hz-22 kHz ±2.0 dB

Frequency Response w/ Bass Reduction Switch selected

Analog Input Impedance
10K ohms unbalanced

Nominal Impedance

Input Impedance

Crossover Frequency

Output current limiting, thermal over-temperature, power on/off transient protection

Power Consumption
Idle: 10W

Standby Consumption


Recommended Amplifier Power

Battery Life

Battery Charge Time

Bluetooth Specifications

Internal D/A Converter
PCM 5102

Internal BT Receiver

Input Bit Depth
16 bit

Bluetooth Receiver Type
Bluetooth 5.0

Supported Codecs
aptX, AAC, SBC

Supported Bluetooth Profiles

Wireless Operation Range
Up to 100 ft (30 m) typical

Input Data Rate
Determined by Bluetooth

Wireless Latency
~30 milliseconds (ms)

Usb Specifications

Connector Type

USB Device Class

Input Bit Depth

Input Sample Rate

Headphone Amp Specifications

Headphone Amp Type

Full-scale Headphone Output Level

Output Impedance

Recommended Headphone Impedance Level

Optical Specifications

Internal D/A converter

Input Bit Depth

Sample Rate

Weights And Measures

Dimensions (HWD)
4.25”(10.8 cm) x 12.25”(31.1 cm) x 5.50”(14 cm)

6 lb (2.7 kg)

Total Shipping Weight
10 lb (4.6 kg)

Shipping Box Dimensions (LWH)
16” (40.6 cm) x 7.5” (19.1 cm) x 10.5” (26.7 cm)

Environmental Requirements

Operating temperature: 32 degrees F to 95 degrees F
Non-operating temperature: -4 degrees F to 113 degrees F
Relative humidity: 5% to 95% non-condensing

Materials And Construction

0.7" (18 mm) thick MDF cabinets with real wood veneer
0.75" (20 mm) silk dome tweeters with neodymium magnets
2.75" (70 mm) aramid fiber woofers with advanced voice coils


To minimize unwanted resonances and distortion, Audioengine cabinets have thick high-resin MDF walls with extensive internal bracing. Heavy internal sound-damping material is also used to reduce unwanted sound reflections inside the cabinet. The B2 cabinet is a unique design in that it has dual sub-enclosures to prevent cross-interference, while each side contains its own tuned, front-port bass slot.

Furniture Grade Finishes

The B2 cabinet is available in several handsome finishes, including walnut and zebrawood veneers as well as satin black paint, offering a wide choice for complementing room furnishings. Also included is a detachable grill that adds further aesthetic advantages as it's firmly held in place with hidden neodymium magnets for a clean look.

Custom Components

Audioengine designs and manufactures our own tweeters, woofers, and other critical components. In other words, these are not “box built” speakers with off-the-shelf parts but custom-designed to our specifications. What we do not fabricate directly in our factory we have made to our designs (parts such as transformers, magnets, and wiring harnesses, for example). The cabinets, drivers, bass port designs, amplifiers, and crossovers are all painstakingly tuned together for each Audioengine model. This, in turn, makes for a much more efficient system that requires much less power than passive speakers and a separate integrated amplifier or similar A/V components.

Based On Studio Monitor Designs

Studio monitor speakers are used by producers and engineers in recording and production studios. They are designed with a theoretical flat frequency response which allows the engineer to create a final mix in such a way that the recorded music will sound good on most other speakers. Although Audioengine speakers are not designed to be up-close “nearfield” studio monitors, we do carry over much of the same higher-end technology, components, and design philosophy for all Audioengine speaker systems.

High-quality Bluetooth Audio

The Bluetooth built into the B2 Wireless speakers features aptX coding which is an advanced Bluetooth audio codec with very impressive sound. And even if your phone or tablet does not have aptX, the B2 Wireless Bluetooth solution is backwards-compatible with SBC and AAC codecs, so you can wirelessly stream music from any Bluetooth-enabled device and still enjoy all your music. High-fidelity Bluetooth aptX that really works and sounds great.

Extended-range wireless.
Most Bluetooth implementations have very limited range, typically within just one room. But with careful signal management circuitry and antenna tuning, we offer a superior solution that has up to 3 times the range of standard Bluetooth for multi-room use, with no degradation in audio quality.. Most Bluetooth implementations have very limited range, typically within just one room. But with careful signal management circuitry and antenna tuning, we offer a superior solution that has up to 3 times the range of standard Bluetooth for multi-room use, with no degradation in audio quality.

24 bit DAC
The B2 Bluetooth receiver and USB input both utilize the PCM 5102 DAC, widely known for its low-noise and high-fidelity. The PCM 5102 is used as an upsampling DAC and will pad all bit depths to 24 bit, achieving a higher signal-to-noise ratio and lower noise floor. Due to the high signal-to-noise specs of the PCM 5102, the fact that digital signal is upsampled to 24 bit as well as the added benefit of onboard triple redundancy power source conversion and filtering the B2 Bluetooth implementation presents impressive low noise and low distortion characteristics with a noticeable improvement over other Bluetooth devices.

Amplifier Design

The class D amplifiers in Audioengine speaker systems are very conservatively-rated analog designs. Each subsystem is tuned together for all models, providing a much more efficient system requiring less power than passive speakers and separate amplifiers. An auto-standby idle mode is also included to conserve power when you’re not playing music.

Driver Designs

Audioengine uses audiophile-quality, ferrofluid-cooled, silk dome tweeters with neodymium magnets. Silk tweeters hold up well under high power and the edge-driven design gives very smooth response. The custom woofers are aramid fiber woven glass composite with rubber surrounds. Aramid fiber is obviously very strong, which means that the woofer retains its shape when being driven at high levels. The speaker materials and construction are very robust, therefore speaker grills aren’t needed. In other words, we did our homework on the speaker drivers and they will sound and look great after many years of use.


Both drivers are directly video shielded and allow the user to place the speakers within a few inches of a video monitor. This shielding also offers protection for hard-drive digital music players.

Quickstart Guide

B2 Quick Setup

Step 1:  Connect the Bluetooth antenna to the B2 rear panel.  The B2 will not function without the antenna connected.

Step 2: Connect the power cable to the b2 rear panel and plug the power cable into an AC outlet.

Step 3: Turn on the B2 power switch, which is located on the rear panel.  B2 will automatically go into pair mode and the Pair button on the B2 rear panel should be flashing.

Step 4: On your device, turn on Bluetooth and go to Bluetooth preferences.

Step 5: Select "Audioengine B2" to pair and connect.  The Pair indicator on the B2 rear panel should be solid.

Step 6: Play your music and adjust volume levels on B2 and your device.

Repeat steps 3 thru 6 to add additional devices.  B2 can connect only one device at a time, however it will remember up to six devices.

To disconnect B2 from a paired device and put B2 back into pair mode, press and hold the Pair button on the B2 rear panel until the indicator begins flashing.

For the full setup guide, download the attached PDF:
B2 quickstart guide

B2 Setup Video


B2 Troubleshooting Tips

The following troubleshooting tips can help diagnose and correct most concerns with the B2. We have attempted to make this list as comprehensive as possible, so some of these may not apply to your issue, but please go through each tip.

If the indicator on the B2 rear panel is not illuminated, then try these tips:

  1. If the indicator light on the B2 rear panel is not illuminated, then make sure the AC power cord is connected to the rear panel and to a working AC power outlet.
  2. Verify that the B2 rear panel power switch is in the ON position.

If the indicator light on the B2 rear panel is on but you are experiencing an audio-related issue, try these tips:

  1. Check that the cables from your audio sources to the speaker are properly connected. Confirm this by unplugging the audio cables and then reconnecting.
  2. Verify that the volume/power control on the rear panel is not turned all the way down or powered off (we recommend setting the volume to at least the 10 o’clock position).
  3. Make sure the volume is up on your media players, internet radio, master control, device volume, etc. and that the balance control is centered.
  4. Decrease the volume of the input audio source and increase the volume of the B2 speaker.
  5. Try using different audio input sources and/or devices to see if the problem follows.
  6. If your input source has its own EQ, please make sure the low end is at a moderate level as having too much bass in your signal can cause distortion.
  7. If you are using a wireless adapter, preamp, or external DAC, remove these (temporarily) and connect the audio source directly to the B2 speaker.
  8. Move your speaker to a different location to see if something is causing interference in the current setup.  Something as simple as a wireless internet router, cordless or mobile phone, or halogen lamp near the speaker can cause interference.

B2 troubleshooting tips - Bluetooth

  1. Verify that the B2 speaker is connected to power and the rear panel power switch is turned on.  If you haven’t already, power-cycle your speaker by switching it off and back on.
  2. If your B2 is already connected to a device via Bluetooth, the Bluetooth Pair light on the rear panel of the left speaker will be on and solid (note that if your B2 has been idle and not connected to a device for more than 2 minutes, the Pair light will automatically turn off).  Tap the Pair button and it should begin blinking (or pair to your B2 using your source device, and the LED will go from off to on and solid).
  3. Check to make sure your source device (computer, tablet, phone, etc) and all audio apps are running the most up-to-date version of software available. For Mac OS users, be sure to check the App store to see if there's a newer version of Mac OS you could be running.
  4. Try playing audio from more than one application on your phone/tablet, or computer.
  5. Try disconnecting from and forgetting the B2 through your device’s Bluetooth settings and then re-pair to the B2.
  6. Try using a different device with your B2 to see if the issue follows.  Also be sure to test your B2 using the analog input as well.
  7. If possible, try your B2 in a different location to see if something is causing an issue in the current setup.  Something as simple as a wireless internet router, cordless or mobile phone, or halogen lamp near the speakers may be causing interference in your setup.


1. Turn Off and Unplug:

  • Make sure your system is turned off and unplugged.

2. Dust the Surfaces:

  • Use a soft, dry cloth to wipe away dust.
  • For hard-to-reach places, use a soft brush or a can of compressed air.

3. Wipe Down the Exterior:

  • We do not recommend using any solvents
  • If cleaning off stains or build-up is necessary, we recommend doing so with a very small amount of mild cleaning solution applied only to the affected area, followed by quickly wiping the area dry completely. 
  • Any scoured pads or objects like a 'magic eraser' too easily run the risk of removing sealers and top coats of the painted finish that can leave a clearly visible change in the uniformity of the paint/finish

4. Clean the Speaker Grills:

  • The speaker grills can be gently cleaned with a vacuum, preferably using a soft bush attachment.
  • A lint roller can also be used.

5. Clean Buttons and Knobs:

  • A dry cloth is recommend for cleaning any knobs, buttons or other surfaces
  • Be careful not to let water get into any gaps.

6. Clean Ports and Connections:

  • Use compressed air to blow out dust from ports and connections.

7. Let Everything Dry:

  • Make sure everything is completely dry before plugging back in and turning on.

8. Regular Cleaning:

  • Dust your system regularly to keep it in good shape.

By following these steps, you can keep your Audioengine system clean and working well.

Audioengine operates two websites, audioengine.com and audioengineeu.com. If you go to any other site but these, they are not an Audioengine site. For Canada, Mexico and most of Europe and the UK, we only sell through Amazon. There are also a host of authorized retailers and sites across the US, and they can be found here. For international sales, we have distributors that operate independently, and they can be found here

What happens if I buy from an authorized site claiming to be Audioengine? Unfortunately, there is not much we can do. We are taking all the action we can to make sure those sites don't get indexed, but we recommend you work with the provider of the card you used to make payment to get your money back.

Step-by-Step Guide

  1. Open Terminal:
    • You can find Terminal in your Applications folder under Utilities, or you can use Spotlight by pressing Cmd + Space and typing "Terminal".
  2. Execute the Command:
    • In the Terminal window, type the following command and press Enter:


Copy code

sudo pkill bluetoothd

  1. Enter Your Password:
    • After pressing Enter, you will be prompted to enter your password. Type your Mac's administrator password and press Enter.
    • Note that when you type your password, it won't be displayed on the screen (not even as asterisks). Just type it and press Enter.

By following these steps, you should be able to reset your Bluetooth service on your Mac, which can help resolve connectivity issues with your Audioengine devices or any other Bluetooth peripherals.

The Dimensions are 4.25”H x 12.25”W x 5.50”D

We take great pride in our products, and go through great lengths to ensure consistency and quality. For that reason, this item was randomly selected for an additional step of Quality Assurance.

The speakers we offer that are designed to have a remote control are the A5+ Classic, A5+ Wireless and HD6.

The following systems do NOT support a remote control:  512, A1, A1-MR, A2+, B2, HD3, HD4.

There can be only 1 active pairing at a time.

No, there are no firmware updates or special drivers needed unless you own our A1-MR multi-room speakers or our B-Fi multi-room wireless streaming device.

If a firmware update is released for the A1-MR or the B-Fi, you will be notified of the update the next time you open the Audioengine Control App.  If an update is needed, simply click "update" on the DEVICES page next to the product that needs to have the firmware update applied.  The app will handle the rest of the process from there!

Standard plug-n-play drivers that are provided by your computer's OS are utilized when using the USB input on our A2+, HD3, and HD4 speaker models.

And all of our Bluetooth speakers/products are compatible with any device that supports Bluetooth, and the A2DP profile for streaming stereo audio. This includes most smartphones, tablets, and computers. For computers that don't include Bluetooth support out of the box, you can simply add a USB Bluetooth adapter.

If you have recently purchased a B2 and you cannot find the antenna or antenna post on the back of the unit, don't worry! Starting in 2021, we made some updates to the B2 cabinet.  One of those changes was mounting the antenna inside of the speaker cabinet.  So if you do not have an antenna nor see a way to attach one, then rest assured knowing that the antenna is mounted to the inside of the cabinet of your B2.

                             Applicable to our A1, A2+Wireless, B2, A5+Wireless, and HD6 speaker models

Turn on the speakers using the power switch located on the rear panel.  The speakers will automatically go into Bluetooth "pair mode" and the Pair button on the back panel should start flashing.

  1. On your source device (phone, tablet, laptop, etc), turn on Bluetooth and go to Bluetooth preferences.
  2. Select "Audioengine (your speaker model)" from the list of available devices to pair and connect.  The Pair indicator on the back panel should now be solid. Play your music and adjust the volume levels on the speakers and your device.

To add additional devices put the speakers back into pair mode by disconnecting them from your device or by pressing and holding the Pair button until the pair indicator starts flashing.

Our speakers can wirelessly connect to only one device at a time, however it will remember up to six different devices.

If your B2 speaker sounds distorted, is buzzing, or just doesn't sound quite right, we'd recommend the following troubleshooting steps:

Start with power cycling your B2 by turning it off and then back on.  From there:

  1. Determine if the distortion is due to your source by disconnecting all source devices from the speakers.
  2. Please make sure all of your connector cables are in working order. Try different cables as well as a different source device.
  3. Please try using each input available (mini-jack and Bluetooth), one at a time, to see how the speakers react.
  4. Make sure it is not a power issue by trying a power outlet that is on a different circuit.

If the issue persists, please click on the following link and then click on the dropdown to submit an email to our Support team:

Support Page

When doing so, please copy and paste the above troubleshooting steps along with the results of each and include this information when contacting us.

Absolutely!  You can connect any Audioengine speaker with an analog output to any Sonos product that has the Line-In feature.  You can also connect any Audioengine passive speakers into an existing Sonos system using the Sonos Amp.

Absolutely! To do so:

  • Open the Alexa App on your smartphone or tablet (Apple link  |  Google Play Link)
  • Tap the “Devices” icon and select the Echo/Alexa device you want to connect to speakers
  • Select “Bluetooth Devices”
  • Select “Pair New Device”
  • Find your Audioengine wireless speaker on the list of available Bluetooth devices, and select it

Your Bluetooth connection works by projecting the sound from your phone. So, if your ringtone volume is on, that sound will come through Bluetooth too. This is a simple fix by changing the phone's ringtone settings to either vibrate or silent.

This sometimes happens when the speakers and turntable share the same surface. The vibrations from the speakers playing feedback into the turntables stylus, causing unwanted noise. The best way to mitigate this would be to place the speakers on a different surface. If that's not an option, we'd recommend trying out some isolation stands. For larger speakers like A5+ and HD6, the ones made by Isoacoustics work well.

Yes! We incorporate all the relevant functions and features from Bluetooth 5.0 that apply to our products! These features include; extended range, low latency (so that video and audio sync properly), as well as higher level aptX-HD, aptX, and AAC codecs (with the exception of our 512 portable speaker which supports SBC only). Keep in mind that the capability of the source is what controls the Bluetooth experience.

If the left speaker is in an easy to reach location, you can certainly use the physical knob to set volume. If not though, it's perfectly fine to set the speakers to a good volume and then adjust from your source moving forward. Every setup is different, so some experimentation will be necessary to find your preferred settings.

Though overall latency can be affected by some external factors (including things like signal strength, how well the source device's manufacturer has implemented it's Bluetooth, and even simply from being physically further away from the speakers) Audioengine Bluetooth products have very low latency when compared to most Bluetooth receivers, 30ms or less.

Here are some tips you can use to minimize any latency issues you may run into with your Bluetooth setup:

1) Try restarting both your device as well as the speakers (by switching them off, and back on, with the power switch on the rear of the speakers).

2) Check to make sure your source device is running the most up to date version of software available.

3) Try disconnecting from and forgetting the your Bluetooth speaker or device through your source’s Bluetooth settings, and then re-pair to your Bluetooth speaker/device.

4) If you have multiple apps or windows open when the delay occurs, try closing all of the apps that are not currently in use.  The more multitasking your system is having to do, the greater the potential delay in audio when using Bluetooth -- this would apply to both your smart phone and computer.

5) When using your iPhone, we've found that resetting your network settings can help improve the overall functionality of Bluetooth with your device -- including the latency.

You can absolutely use a turntable with the B2. Some turntables will need a preamp before being connected and others are OK, therefore it is best to try your turntable without the preamp first to see how it operates.

If you have a Mac running snow leopard or later, you can create a multiple output device to accomplish this. See the link below for how-to instructions on Apple’s site:


The short answer is yes! You can use TIDAL on any compatible source device (PC, Mac, iPhone Android, etc.). The B2 is compatible with most all of these devices as well since they almost universally also include Bluetooth.

Yes they do! They are equipped with a power-saving circuit that turns off the speaker's final stage amp. This idle mode activates right after you stop playing music. Due to this power-saving function, it's perfectly fine for the speakers to stay on all the time!

Setting up your Bluetooth turntable with your Bluetooth-ready Audioengine speakers/components should be simple! First, you would also need to make sure your Audioengine Bluetooth device is on, in pair mode (LED light flashing), and near the turntable. Next, you would need to use the pairing button to send the turntable into pairing mode. Depending on the turntable, you will need to either press and release the turntable's pair button or press and hold it; for example, on the Audio Technica AT-LP60-BT you would need to hold the turntable's pairing button for about two seconds, until the light flashes different colors. Once the turntable is in pairing mode, it will search and connect to the nearest available Bluetooth device. Once the turntable if paired and connected to your Audioengine Bluetooth device, the pair light on the receiver should turn solid.

If you’ve connected your turntable to your speakers and the volume is low, one of two situations may be happening:

If you have a turntable with a built-in phono preamp, such as the Audio-Technica ATLP120 or the Music Hall USB-1, the output may be in the wrong setting. Double check and make sure the switch is set to “line” instead of “phono.” Be careful to keep the volume of your speakers low as it can be quite loud if you had to switch it to "line".

Your turntable could also not include a built-in phono preamp, such as older turntables. If your turntable does not include a built-in preamp, you will need to add an external preamp to bring the signal up to a line level signal. We don’t have any recommendations on a particular brand or model preamp to use with this setup.

The B2 is designed as a standalone speaker, it has inputs for Bluetooth and 3.5 mm mini jack. It does not have an output, so unfortunately you cannot output from a B2 to a subwoofer.

The overall range you can expect will vary depending on the device you use with the B2. We tested using mostly a variety of smartphones though, and found 30 to 40 feet to be a realistic expectation through one or two walls and 100ft or more in an open space.

You can have two sources connected at the same time with no need to flip any switches, simply play audio from the source you wish to hear. Though, if you are using multiple sources you may be able to hear both inputs playing simultaneously.

There is an auxiliary input on the rear panel so you can directly connect any product with an audio output.

Bluetooth has a delay of about 30ms (milliseconds) so you can watch videos from Youtube, for example, and stream out the audio through B1 to your stereo system without any noticeable lag between the video and audio.

You can absolutely still use the B2 and it will sound great. AptX is a high-quality Bluetooth audio codec that works really well. In addition to mandatory support for SBC, Bluetooth also includes optional support for many other codecs, like MPEG-1, MPEG-2, MPEG-4, and AAC, all of which have their own advantages, and some of which sound very close to AptX.

  • If it's on and solid, this means the B2 is powered on, and currently connected to a Bluetooth-enabled device.
  • If it's on and blinking, this means the B2 is powered on but not currently connected to a device.
  • If it's off (and B2 is powered on), this means Bluetooth is in standby and not connected to a device. The B2, however, is still visible to your device, so simply connect using your device and it will automatically wake up.

Our B2 is an all-in-one system with no extra components needed except your phone or computer. All you need to do is unpack the speakers, place them where you want, and then plug in the AC cord. Then connect your music source using the supplied cables - or go wireless with any Bluetooth enabled source device, like a computer, smartphone, or tablet.

Here is a quick video that can be used as a reference:

B2 Setup Video

(Please note - there is no audio associated with the video.)

Absolutely! The B2 can be used in either 110-120v or 220-240v areas without flipping any switches, modding your B2, or using a power converter. If you're moving to an area with a different plug type than what came standard with your B2, we wouldn't recommend using an adapter and would suggest trying to find another AC cord for your B2 that have the correct plugs.  The B2 uses a non-polarized 2-pin IEC 320 C7 power cord, so you should be able to find one locally with the correct plug for your area.

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