Technical Specifications

Metafield Image

General Specifications

Powered Bluetooth aptX speaker system

Amplifier Type
Class AB

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, RCA L/R, USB, Bluetooth

RCA variable line-out

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

>95 dB (typical A-weighted)

Less than 0.05% at all power settings

<50 dB

Frequency Response
65 Hz-22 kHz ±2.0 dB

Frequency Response w/ Bass Reduction Switch selected

Analog Input Impedance

Nominal Impedance

Input Impedance
10K ohms unbalanced

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 BT Receiver
Qualcomm QCC 3031/3034

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
type 1.1 and above

Input Bit Depth
up to 16 bit native

Input Sample Rate
up to 48 kHz native.

Internal D/A Converter

Weights And Measures

Dimensions (HWD)
Each speaker – 6″ (15.2 cm) x 4″ (10.2 cm) x 5.25″ (13.3 cm)

Left (active) – 3.6 lb (1.6 kg)
Right (passive) – 3.2 lb (1.4 kg)

Total Shipping Weight
10 lb (4.6 kg)

Shipping Box Dimensions (LWH)
15” (38.1 cm) x 7” (17.8 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
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 used to reduce unwanted sound reflections inside the cabinet. All cabinet edges are rounded which look great and reduce high-frequency diffraction effects on the front baffles. The A2+ cabinet contains tuned, front-port slots.

Furniture Grade Finishes

The A2+ cabinets are available in several handsome, high-gloss finishes, including black, white and red paint, offering a modern compliment to any small space or desktop.

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.

Efficient Integrated Design

The speaker cabinets, drivers, innovative bass port designs, amplifiers, and passive crossovers are all critically tuned together for each Audioengine model. This, in turn, makes for a much more efficient system that requires less power than passive speakers and a separate integrated amplifier or similar A/V components. We build all this goodness into the left speaker cabinet to make it super-easy to connect your smartphone, tablet, computer, TV, network player or any other audio product.

High-quality Bluetooth Audio

The Bluetooth built into the A2+ 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 A2+ 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.

16 bit DAC
The A2+ Bluetooth receiver utilizes the PCM 2704C DAC, known for extremely-low quantization noise in the audio band, with a built-in analog low-pass filter that removes the high-frequency components of the noise-shaping signal.

Amplifier Design

The amplifiers in powered Audioengine speakers are located in the left speaker and are a conservatively-rated class A/B analog monoblock design. This is a more traditional speaker/amplifier configuration which provides excellent quality audio and greater flexibility. All circuit boards for the power and preamp sections are vertically mounted for maximum mechanical shock protection.

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 woofers are aramid fiber woven glass composite with rubber surrounds. Aramid fiber is obviously very strong, which means the woofer retains its shape when being driven at high levels.


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

Metafield Image

A2+ Wireless Quick Setup

Step 1: Connect the included speaker wire from the A2+ left (powered) speaker to the right (passive) speaker, observing proper polarity to each speaker connector.

1) Use your thumb and finger to unscrew the binding post connectors on the back of each speaker.

2) Insert each speaker wire into the holes on the side of binding post connectors, making sure to connect the positive (+) terminal on the left speaker to the positive (+) terminal on the right speaker.

3) Retighten the binding posts with your fingers.

4) Verify that only the exposed portion of the speaker wire is secured firmly in each connector.

5) Make sure that none of the speaker wire strands have come in contact with an adjoining terminal.

Step 2: Verify that the volume/power knob on the rear panel of the left speaker is in the OFF position by rotating the knob until it clicks off..

Step 3: Connect the cable from the external power supply to the A2+ left speaker rear panel.

Step 4: Connect the Ac power cord to the other end of the power supply, and plug the cord into a functioning power outlet. A light on the power supply should be illuminated.

Wireless Connection

Step 1: Turn power on via the rear panel volume/power knob.
A2+ Wireless will automatically go into Bluetooth "pair mode" and the Pair button on the A2+ Wireless rear panel will start flashing.

Step 2: On your device (phone, tablet, computer, etc), turn on Bluetooth and go to Bluetooth preferences.

Step 3: Select "Audioengine A2+" to pair and connect. The Pair indicator on the A2+ rear panel should be solid.

Step 4: Play your music and adjust volume levels on A2+ Wireless and your device.

Step 5: To add additional devices put A2+ back into pair mode by disconnecting A2+ from your device or by pressing and holding the Pair button on the A2+ Wireless rear panel until the pair indicator starts flashing. Repeat steps 2-4 to connect another device.

A2+ can wirelessly connect to only one device at a time, however it will pair with and remember up to 6 different devices.

Wired Connection

Step 1: Connect an audio cable between your device and one of the inputs on the A2+ rear panel.

Step 2: Play your music and adjust the volume on the speakers and your device to the desired listening levels.

USB Audio Connection

Step 1: Connect the included USB cable between your computer and the USB input on the rear panel of the left powered speaker.

Step 2: If using Windows, the A2+ should be recognized automatically. For MacOS, under System Preferences/Sound/Output, select “Audioengine A2+”.

For the full setup guide, download the attached PDF:
A2+ Wireless Quickstart Guide


A2+ Wireless Troubleshooting Tips

The following troubleshooting tips can help diagnose and correct most concerns with the A2+ Wireless. 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 power indicator on the A2+ external power supply unit is not illuminated, try these tips:
  1. Make sure the AC power cord is connected to the power supply unit and to a working AC power outlet.
  2. Check that the cable at the other end of the power supply is correctly connected to the rear panel of the left speaker.
If the power supply light is on but you are experiencing an audio-related issue with a wired connection, try these tips:
  1. 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)
  2. Check that the volume level of your audio source components or devices is not set to minimum volume or powered off.
  3. Check speaker wire connections from the left (powered) speaker to the right (passive) speaker. Confirm this by removing the speaker wire from on each speaker and reconnecting.  Also check the speaker wire polarity by verifying that the wires are going to same terminals on both speakers.
  4. Check that the cables from your audio sources to the speakers are properly connected. Confirm this by unplugging the audio cables and then reconnecting.
  5. Decrease the volume of the input audio source and increase the volume of the speakers.
  6. Try using different audio input sources and/or devices to see if the problem follows.
  7. Try swapping your left and right speaker via the RCA left and right inputs to see if the issue remains in the same channel or follows the speaker.
  8. If you are using a computer with your A2+ Wireless, make sure the volume is up on your media players, internet radio, master control, device volume, etc. and the balance control is centered.
If your input source has its own EQ, please make sure the low end is at a moderate level, as having too much bass can cause distortion.
  • If you are using a wireless adapter, preamp, or external DAC with these speakers, remove them (temporarily) and connect the audio input source directly to the speakers.
  • Move your speakers 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 speakers can cause interference.
A2+ Wireless troubleshooting tips – internal USB digital-to-analog converter

Try these tips if your computer is not recognizing the speaker through your computer’s USB input or the sound through USB isn’t functioning correctly.

If you are using a Windows computer, uninstall the USB driver from your computer.  Then disconnect the USB cable to remove the A2+ from your computer and plug it back in to allow the USB driver to re-install automatically.  You can find complete instructions from Microsoft on how to reinstall a plug-and-play device under Windows here.

If you are using a Mac, try a NVRAM/PRAM reset.  This resets the system configurations for some audio and video related items and can many times help clear up problems related to audio. See Apple’s support page for information on how to do this.

A2+ Wireless troubleshooting tips – Bluetooth
  1. Verify that the A2+ is connected to power and that the front volume knob is turned clockwise past the detent position (you should feel a click).  If you haven’t already, power-cycle your speakers by switching them off and back on.
  2. If your A2+ is already connected to a device via Bluetooth, the Bluetooth pair light on the back panel of the left speaker will be on and solid (note that if your A2+ 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 A2+ using your source device, and the LED will go from off to on and solid).
  3. Try playing audio from more than one application on your phone/tablet, or computer.
  4. Check to make sure your source device (computer, tablet, phone, etc) is 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.
  5. Try disconnecting from and forgetting the A2+ through your device’s Bluetooth settings, and re-pairing to the A2+.
  6. Try using a different source device with your A2+ to see if the issue follows.  Also be sure to test your A2+ using the analog input as well.
  7. If possible, try your A2+ 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.
For the full setup guide, download the attached PDF:


You can do this using powered speakers like our A2+s, HD3s, HD4s, A5+s, and HD6s. For this, you’ll connect the W3 sender to the RCA output on the left speaker, using a 3.5mm stereo-mini to RCA “Y” cable. Then connect the W3 Receiver to the input on your S8. You can either use a 3.5mm stereo-mini to stereo-mini cable for this, or another 3.5mm stereo-mini to RCA “Y” cable; either will work fine. Both W3 units will need to be powered from a USB port. You can use USB AC power adapters, or if the powered speaker you’re using is our A5+ Classic model, you can use the USB port on it’s rear panel for the W3 sender. The same would apply to the S8 subwoofer if you have our current ‘Gen II’ model that has a USB port on the rear panel.

Absolutely! Our speakers are safe to place sideways and, from our experience, sound great. When doing so, we recommend that you position each so the tweeters are facing outward.

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.

Yes! As long as your speakers have an analog output (either RCA outputs or a 3.5mm stereo mini output), you can absolutely connect the S6 to your powered speakers. With the exception of the B2, all of our powered speakers will have the outputs needed to connect the S6, this includes the original A2 and A5 models.

You can simply use RCA cables to connect the S6 to the A2+, HD3, HD4, A5+, A5+Wireless, and HD6 speaker models.

For the A1 and A1-MR speakers, you can use one side of your stereo RCA cables. Just use the left/white RCA cable, and leave the red RCA disconnected to prevent an accidental ground loop.

** Please note: a 3.5mm/stereo mini cable will not work with the ‘Subwoofer’ output on the back of your A1/A1-MR speakers. **

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.

Applicable to our A2+, HD3, HD4, A5+, A5+Wireless, and HD6 speakers.

Start with power cycling your speakers by turning them 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, RCA, USB, as well as Bluetooth), one at a time, to see how the speakers react. If the distortion is unique to one speaker, when testing via RCA switch the RCA jacks (red to white and white to red) to see if the issue remains in the same channel.
  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.

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.

Product Videos