HD3 Wireless Speakers

$399

HD3 Wireless Mini Music System
Our most-versatile speakers with wireless that works. HD3 works with all your apps, music, and devices so no matter how you listen, HD3 has you covered. The ultimate mini music system.
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Product Description


Highlights

  • For your desktop or smaller spaces but will easily fill a room
  • Wireless that works with all your devices and apps
  • High-end sound with great looks and hand-built wood cabinets
  • Simple setup, no receiver needed
  • No buttons to push & inputs are always ready to go
  • Front panel volume control and headphone jack

The ultimate mini music system

Our HD Series was designed for the way people listen to music today— streaming wirelessly, digital downloads, vinyl, etc. HD3 sets a new standard for compact mini music systems because of its versatility and ability to play all of your music from any device.

No missed connections

Connect to HD3 any way you like: wirelessly or wired, digital or analog. Stream your music library, TIDAL, Spotify, Pandora, YouTube, etc. to HD3 from just about anywhere in your house without dropouts. Wireless setup is a breeze and only takes about a minute. And if you’re using HD3 on your desktop, connect up with a USB cable. The USB input bypasses your computer’s built-in low-quality headphone jack for a high-end listening experience. But if you’re not keen on USB or wireless you can still use any audio cable to connect.

Your go-to system

Easy setup, simple and useful features, and wide stereo sound make HD3 your go-to music system. HD3 is expandable, so if you want deeper bass just connect up your subwoofer. No matter how you listen to music, HD3 has you covered.

Plug in your headphones

HD3 includes a dedicated high-performance headphone output so you can listen and not wake the neighbors. Its audiophile-quality headphone amplifier delivers high-end sound that drives even the most-demanding headphones.

Retro-forward design

HD3 was designed for audio performance, but speakers obviously also need to look good so we’ve included furniture-grade wood veneers, aluminum trim accents, and detachable magnetic grills that blend with any decor. Available in Satin Black as well as real Walnut and Cherry wood at no additional cost if you want to really show them off.

Small speakers that pack a punch

Built-in power amplifiers save space and eliminate the need to connect HD3 to a stereo receiver or external power amp. Simply plug the left speaker into a power outlet and connect the included speaker wire from the left to the right speaker. All internal components of the HD3 are designed and tuned together, so you’ll get Audioengine’s Signature Sound and a much more efficient system than traditional separate speakers and amplifier.

★★★★★ Support

Need help getting started with your new HD3’s? Here are some resources that will help.

 

Why Audioengine?

  • Left and right speaker included.
  • Everything you need is in the box!
  • We pay sales tax, if applicable.
  • Free ground shipping in the contiguous United States.
  • Listen to HD3 for 30 days. Love it, or return it for a full refund.*
  • *30-day trial is only available for product purchased directly online from the Audioengine store

     

    Highlights

    • Left and right speaker included.
    • Everything you need is in the box!
    • We pay sales tax, if applicable.
    • Free ground shipping in the contiguous United States.
    • 30-day audition.*

    The ultimate mini music system

    Our HD Series was designed for the way people listen to music today— streaming wirelessly, digital downloads, vinyl, etc. HD3 sets a new standard for compact mini music systems because of its versatility and ability to play all of your music from any device.

    No missed connections

    Connect to HD3 any way you like: wirelessly or wired, digital or analog. Stream your music library, TIDAL, Spotify, Pandora, YouTube, etc. to HD3 from just about anywhere in your house without dropouts. Wireless setup is a breeze and only takes about a minute. And if you’re using HD3 on your desktop, connect up with a USB cable. The USB input bypasses your computer’s built-in low-quality headphone jack for a high-end listening experience. But if you’re not keen on USB or wireless you can still use any audio cable to connect.

    Your go-to system

    Easy setup, simple and useful features, and wide stereo sound make HD3 your go-to music system. HD3 is expandable, so if you want deeper bass just connect up your subwoofer. No matter how you listen to music, HD3 has you covered.

    Plug in your headphones

    HD3 includes a dedicated high-performance headphone output so you can listen and not wake the neighbors. Its audiophile-quality headphone amplifier delivers high-end sound that drives even the most-demanding headphones.

    Retro-forward design

    HD3 was designed for audio performance, but speakers obviously also need to look good so we’ve included furniture-grade wood veneers, aluminum trim accents, and detachable magnetic grills that blend with any decor. Available in Satin Black as well as real Walnut and Cherry wood at no additional cost if you want to really show them off.

    Small speakers that pack a punch

    Built-in power amplifiers save space and eliminate the need to connect HD3 to a stereo receiver or external power amp. Simply plug the left speaker into a power outlet and connect the included speaker wire from the left to the right speaker. All internal components of the HD3 are designed and tuned together, so you’ll get Audioengine’s Signature Sound and a much more efficient system than traditional separate speakers and amplifier.

    ★★★★★ Support

    Need help getting started with your new HD3’s? Here are some resources that will help.

    30-day audition

    Listen to HD3 for 30 days. Love it, or return it for a full refund.*
    *30-day trial is only available for product purchased directly online from the Audioengine store

    Features

    Features

    Built-in power amplifiers – classic design that simply sounds better
    High-fidelity Bluetooth® aptX®, simplified setup, extended range, and 24-bit upsampling
    USB audio
    Subwoofer connection
    High-performance headphone jack
    Kevlar woofers and silk tweeters
    Detachable magnetic grills

    What’s in the box

    What’s in the box

    HD3 powered (left) speaker
    HD3 passive (right) speaker
    Antenna
    Speaker wire (16AWG), 2 meters (~6.5 feet)
    Power supply
    AC power cable
    Mini-jack audio cable, 1.5 meters (~5 feet)
    USB cable, 1.5 meters (~5 feet)
    Microfiber speaker bags
    Microfiber cable bag
    Microfiber power supply bag
    Quickstart guide
    Product line brochure

    Works with

    Works with

    Mac, PC, tablets, or smartphones
    All operating systems (Windows, MacOS, Linux, iOS, Android)
    All audio player apps and music streaming services (iTunes, Youtube, Spotify, Pandora, etc.)
    Any product with Bluetooth, mini-jack or RCA outputs, or USB audio
    All Audioengine digital-to-analog converters and wireless audio adapters

    Finish options

    Finish options

    Satin Black Paint
    Cherry Wood Veneer
    Walnut Wood Veneer

    About Bluetooth® and aptX®

    About Bluetooth® and aptX®

    Our Bluetooth products easily connect to any of your devices that have Bluetooth, but to get the best sound possible we recommend using a device that supports Bluetooth aptX. Find out more about aptX here: csr.com/products/aptx

    And if you’re looking for a new smartphone, tablet, or computer with aptX or want to look up your device and see if it supports aptX, go here to check out what’s available: aptx.com/products/browse/categories

    And for iPad or iPhone users that don’t have aptX, don’t despair! MacOS (MacBook, iMac, Mac mini) include Bluetooth aptX, however if you use an iPhone or iPad, Apple generally uses the AAC codec and doesn’t support aptX. AAC sounds really good as well and you’ll also get the extra benefit of our upsampling 24-bit DAC, so you won’t be disappointed by the sound quality if you use an iOS device with any of our Bluetooth products.

    General specifications

    General specifications

    Type
    2.0 powered multimedia speaker system

    Amplifier type
    Dual analog class A/B monolithic

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

    Drivers
    2.75″ Kevlar woofers, 3/4” silk dome tweeters

    Inputs
    3.5mm stereo mini-jack, stereo RCA, USB, Bluetooth

    Outputs
    RCA variable line-out, 3.5mm mini-jack headphone out

    Mains voltages
    110-240V 50/60Hz auto-switching

    SNR
    95dB (typical A-weighted)

    THD+N
    <0.05% at all power settings

    Crosstalk
    <50dB

    Frequency response
    65Hz-22kHz ±2.0dB

    Freq. response w/bass reduction switch selected
    100Hz-22kHz ±2.0dB (-5dB down)

    Input impedance
    5K ohms unbalanced

    Headphone amp specifications

    Headphone amp specifications

    Headphone amp type
    OPA2134

    Full-scale headphone output level
    2.0V RMS

    Output impedance
    2 ohms

    Recommended headphone impedance range
    10 ohms to 10K ohms

    Bluetooth specifications

    Bluetooth specifications

    Internal D/A converter
    PCM 5102

    Input bit depth
    24-bits, upsampled

    Bluetooth receiver type
    Bluetooth 4.0 audio

    Supported codecs
    aptX, AAC, SBC

    Wireless operation range
    Up to 100ft (30m) typical

    Input data rate
    Determined by Bluetooth

    Wireless latency
    ~30 milliseconds (ms)

    USB specifications

    USB specifications

    Connector type
    Micro-USB

    USB device class
    USB 1.1 or above

    Internal D/A converter
    PCM 5102

    Input bit depth
    24-bits, upsampled

    Input data rate
    44.1KHz/48KHz

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

    Dimensions (each)
    7”(H) x 4.25”(W) x 5.5”(D)

    Weight (LEFT speaker)
    1.8Kg/4lbs

    Weight (RIGHT speaker)
    1.5Kg/3.4lbs

    Shipping weight
    4.5kg/10lbs per pair

    Shipping box dimensions
    11.6 (29.5cm)H x 11.75 (30cm)L x 8.8(22.5cm)W

    Materials and construction
    18mm thick MDF cabinets with real wood veneer
    3/4″ (20mm) silk dome tweeters with neodymium magnets
    2.75″ Kevlar woofers with advanced voice coils

    Power consumption

    Power consumption

    Idle: 10W
    Mute: 6W
    Sleep: 4W

    Environmental requirements

    Environmental requirements

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

    Custom components

    Custom components

    Audioengine designs and manufactures our own speaker drivers and other critical components. In other words, the HD3 is not a “box-built” system with off-the-shelf parts, but includes custom-designed components constructed to our specifications. What we do not fabricate directly inside our factories we have made to our specific designs – parts such as circuit boards, transformers, magnets, and wiring harnesses, for example.

    Efficient integrated design

    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.

    Built-in B1 and D1

    Built-in B1 and D1

    We’ve taken features from two of our best-selling products, the B1 aptX® Bluetooth® Receiver and the D1 24-bit DAC, and combined some of this circuitry with advanced speaker components to achieve a complete high-end analog and digital audio system.

    High-quality Bluetooth audio

    High-quality Bluetooth audio

    The Bluetooth built into the HD3 powered speakers features aptX coding which is an advanced Bluetooth audio codec with very impressive sound. And even if your phone or tablet doesn’t have aptX, the HD3 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. Here’s why:

    Extended wireless range – 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 HD3 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-bits, 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-bits – as well as the added benefit of onboard triple redundancy power source conversion and filtering – the HD3 Bluetooth implementation presents impressive low noise and low distortion characteristics with a noticeable improvement over other Bluetooth devices.

    HD3 headphone amplifier

    HD3 headphone amplifier

    The HD3 contains a high-performance headphone amplifier based on the OPA2134 low-noise opamp. This amp is able to provide low-impedance, high-fidelity audio and a 2-volt output which easily drives a wide range of headphones.

    Amplifier design

    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

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

    Furniture-grade finishes

    Furniture-grade finishes

    The HD3 cabinets are available in several handsome finishes, including walnut and cherry veneers as well as satin black paint, offering a wide choice for complementing room furnishings. Also included are detachable grills that add further aesthetic advantages as they are firmly held in place with hidden neodymium magnets for a clean look.

    Shielding

    Shielding

    Both of HD3’s speaker drivers are directly magnetically-shielded.

    Prime Audio

    Prime Audio – HD3 Review

    “If you’re looking for an all-in-one solution for your desktop the Audioengine HD3 is currently one of the best options available.”
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    APH Networks

    APH Networks – HD3 Review

    “There is no missing detail with the HD3 — not a single one. Its clarity is simply flawless.”
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    iHi-Fi

    iHi-Fi – HD3 Review

    “The HD3 is far more than a set of powered speakers. It’s a complete, wireless, miniaturized and optimized, two-channel, desktop or room stereo system with power enough for a medium-sized room.”
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    Dagogo – HD3 Review

    “So now Audioengine gives you a real choice when it comes to powered desktop speakers. If you only want to spend $249, they still sell the A2 Powered Speakers. If you want a little better sounding speaker with better looks, a headphone amp with volume control, and every feature I could want, then there is the HD3. They are the best desktop speakers I have ever heard.”
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    Metal-Fi – HD3 Review

    “As a complete package, it’s hard to argue with the HD3s. They sound great for their size and if you want more oomph in the low-end then all you have to do is pick up a sub (AE’s S8 for instance would fit the bill nicely).”
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    Game Tyrant – HD3 Review

    “Well, I wasn’t expecting much but consider this grumpy ol’ tech reviewer extremely impressed. Whether you use the HD3 for gaming, music, movies or a mix, it doesn’t matter because whatever you throw at these mighty mites, they can handle it.”
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    9to5toys.com

    “I’ve heard some pretty bad Bluetooth speakers over the last few years. The race to the bottom has left the low-end flooded with poor reproductions. Audioengine was already cranking out quality speakers, but didn’t rush to meet the wireless trend… my favorite stereo Bluetooth setup to date.”
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    Home Theater Shack – HD3 Review

    “The Audioengine HD3 are a big, fun surprise in a dense package. With Audioengine’s 30-day trial policy, free ground shipping to and from Austin, applicable taxes covered, and a 3-year warranty, you simply cannot go wrong with the HD3 for an application where their size and power range are called for. The HD3 are highly recommended.”
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    Positive Feedback – HD3 Review

    “The HD3s… will redefine the listening experience for those on a more limited budget. Or those who just want totally kick-ass sound from their desktop setup. The HD3s are very, very highly recommended!”
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    Lifehacker – HD3 Review

    “The HD3s sound great, but as with most Audioengine products, they sound really great for their size.”
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    AV2Day – HD3 Review

    My Mac – HD3 Review

    “Audioengine’s new HD3 powered speakers make all other small speakers obsolete.”
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    Audio Video Review – HD3 Review

    “I love these little speakers, and they will be my desktop reference for under $500 speakers.”
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    Audio Head – HD3 Review

    “The new HD3 from Audioengine throws down a large collection of features, all packed into perhaps the smallest frame on the market. For the size, the drivers perform above par. For the features, consumers get a substantial value for purchase price. The HD3 sets a new bar for a true just-add-music experience.”
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    The Master Switch – HD3 Review

    “We got no hesitation in giving these a big thumbs up. They were a genuine pleasure to use, almost effortless in their operation, and we were very sorry to have to send them back.”
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    Custom PC Review – HD3 Review

    “Overall, the Audioengine HD3 is an excellent addition to Audioengine’s desktop speaker lineup and an excellent buy for those looking to purchase a top desktop speaker that brings great sound quality, versatility and an aesthetically pleasing design. Highly recommended!”
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    The Gadgeteer – HD3 Review

    “If you judge a speaker by how it is to be used (and you should), then Audioengine’s HD3 wireless speakers are about as perfect as you can get.”
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    Jim’s Review Room – HD3 Video Review 12/30/2016

    The Sound Guys' Review of HD3 Wireless Speakers

    The Sound Guys – HD3 Review 12/30/2016

    “One thing that I found to be very impressive was how easily you can switch back and forth between sources. Switching between being connected via Bluetooth on my phone to my computer which was hardwired, was seamless and not hard at all. Audioengine got it down perfectly.”
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    Truly Net's Review of HD3 Wireless Speakers

    Truly Net – HD3 Review 12/30/2016

    “One of the better overall computer-ready 2.0 speaker systems on the market. Their sound stage, especially, is remarkable- transparent, detailed, and deep despite being so compact. “
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    PC Mag's Review of HD3 Wireless Speakers

    PC Mag Editor’s Choice – HD3 Review 12/22/2016

    “For audiophiles on a budget, the HD3 allow for an ideal combination of high-quality Bluetooth streaming and wired playback at a reasonable price, earning them our Editors’ Choice award.”
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    WIRED's Review of HD3 Wireless Speakers

    WIRED – HD3 Review 12/21/2016

    “9/10. Nearly flawless, buy it now.”
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    The Chris Voss Show's Unboxing Review of HD3 Wireless Speakers

    Chris Voss Show – HD3 Unboxing Review 12/20/2016

    “The build on these babies is just incredible. Super rich, super well built, and the sound is exceptional.”
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    Apple World Today's Review of HD3 Wireless Speakers

    Apple World Today – HD3 Review 12/13/2016

    “The HD3 is a fine wireless speaker; however, it’s a desktop speaker system that it really shines.”
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    Ask Dave Taylor's Review of HD3 Wireless Speakers

    Ask Dave Taylor – HD3 Review 11/29/2016

    “The new Audioengine HD3 wireless desktop audio speaker system is such a delight: not only does it have splendid sound with its kevlar woofers and silk tweeters, but it’s a pair of speakers that are designed to be separated by 3-6′ of distance, giving you the ability to be “in” the music.”
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    Gear Diary's Review of HD3 Wireless Speakers

    Gear Diary – HD3 Review 11/27/2016

    “These speakers may be small but they are amazing. They sound great, they get super loud and they’re small enough that they can go just about anywhere in your home or office. Add in the wide range of connectivity options and you have my new favorite pair of speakers.”
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    How easy is it to set up HD3?
    HD3 is an all-in-one system with no extra components needed except your phone or computer. Simply place the speakers where you want them and connect the power supply. Hook up the included speaker wire from the powered left speaker to the right passive speaker. Then connect your music with the supplied cables – or go wireless – and that’s it.

    Why do I have to plug one speaker into the wall?
    Audioengine powered speakers have a built-in stereo power amplifier in the left speaker so you won’t need a stereo receiver or power amp to drive them.

    Can I take my Audioengine speakers to another country with a different voltage?
    Yes. HD3 uses a switching power supply so it will automatically convert to the different voltage. The power cable is detachable which makes it convenient to replace with a different type if you don’t want to use an adapter.

    Do higher power output ratings for audio gear mean louder or better sounding speakers?
    Not necessarily. Audioengine speakers and amplifiers are very efficient and designed together as a system so therefore we get more volume output than stereo receivers or amplifiers that might higher wattage or power numbers. Due to this tuning we achieve big sound outputs with a fraction of the power required by other systems.

    It is true that speaker placement really can make a difference in sound quality?
    There are different theories but rooms and tastes are different so it’s tough to specify a correct placement. We suggest you experiment with different locations to see what works for you. As a general rule of thumb for the best sound stage balance, the speakers should be equi-distant from side walls and a different distance from rear walls. Our front-ported speakers (such as HD3) do not need any rear panel clearance for better bass but we recommend keeping them a few inches from the rear wall for adequate ventilation.

    Can I increase the length or change the speaker wire between each speaker?
    Sure. For the best audio performance we’ve included 6.5 feet of 16 gauge wire with each powered speaker system but any “stranded” speaker wire will work. The speaker binding posts on the back of each cabinet will accept bare stranded wire, however you can also use wires terminated with spade lugs, banana plugs, or pins.

    Will the sound be affected if I place the left (active) speaker on the right side and the right speaker on the left?
    Swapping the left speaker with the right will not have any negative effect on the quality or clarity of the speakers. This will simply give you the reverse of what the artist intended for you to hear.

    Can Audioengine speakers be placed on their sides?
    Yes, and we recommend you position each speaker cabinet so the tweeters are facing outward.

    Will Audioengine speakers work with a PC or Mac?
    Absolutely! Use the computer’s headphone output, soundcard, USB port, or Bluetooth wireless from your Mac or PC directly into Audioengine speakers and you’re good to go. PC, Mac, laptop or any computer.

    The sound quality of my computer’s headphone jack isn’t very good but I want to connect my Audioengine speakers. What do I do?
    Some computer headphone outputs have poor audio quality, so if this is your computer, try connecting from the USB port to your with HD3 or connect wirelessly via Bluetooth.

    When using the USB input of the HD3, what bit rate and bit depth should I set my system to?
    The HD3 internal DAC handles up to 48K transfer rate, and up to 16 bits bit-depth. Your system will generally default to these settings when you hook up the HD3. If you mainly use 44.1K files, you might set this as the default in your system. Many system players like JRiver and Amarra will default to the proper bit rate automatically.

    The HD3 has a built in USB digital-to-analog converter (DAC), but can I also use a different DAC?
    While the DAC in the HD3 is better than what what is built into most computers, adding a 24-bit DAC, such as our D1 or D3, would still be a benefit to audio quality.

    Can I use HD3 with my iPad or iPhone via my computer’s USB port to bypass the internal DAC and get better sound?
    Yes. You will need to pick up the USB Camera Adapter from Apple, which allows a USB connection to the iPad (and, as of iOS7, the iPhone). Then just hook up as you would from a computer.

    Can I use the HD3 with other tablets or smartphones like Samsung Galaxy or Microsoft Surface?
    Yes. If your tablet or smartphone has a USB output and supports USB audio (refer to the manufacturer’s documentation), then it will work with HD3’s USB input. You’ll most likely also need an OTG adapter cable to connect from your tablet to the USB input on the HD3. These are generally available from the manufacturer of your tablet/smartphone, local electronic stores, or even online retailers.

    Will I get buzz from the speakers if I place my iPhone near them?
    Audioengine speakers are video and magnetically-shielded, however “GSM buzz” cannot be blocked by magnetic shielding. What actually causes this is your phone being in 2G or “EDGE” instead of 3G or 4G. For best results when using your phone as a music source, ensure that it’s operating on 3G (or 4G).

    Is it OK to connect Audioengine powered speakers to my stereo receiver or amplifier?
    We’ve built amplifiers into our powered speakers but if you wish to use Audioengine speakers with an existing receiver, connect the “preamp out” from your receiver or amp to one of the Audioengine inputs (if you need to, use the included RCA stereo “Y” connector to 1/8” mini plug cable). We also make passive unpowered speakers (the HDP6 and P4), so check those out as well.

    If I connect my turntable to the HD3 will it be necessary to purchase a phono preamp or can I simply connect the turntable directly to the HD3 input?
    Some turntables will need a preamp before being connected and others may have one built-in. Check the turntable manufacturer’s website or user manual.

    When I connect a turntable to my HD3, why is the volume is extremely low?
    Some turntables do not have a built-in preamps and as a result you will need to add an external phono preamp between your turntable and HD3. Many turntables, however, (such as the Music Hall USB-1 or Audio Technica AT-LP120) have a built-in preamp and include a switch on the back for “line” or “phono”. For Audioengine powered speakers select “line”.

    Where do I connect the ground wire of my turntable to the speakers?
    There isn’t a need to connect a ground wire as this is a connection that is needed between the turntable and it’s phono preamp (whether the preamp is built into the turntable, or external). When going from the very low level of a phono cartridge, it’s easier to pick up noise when bringing this signal up to line level, and the ground wire helps with this. On an internal preamp turntable, this connection is located inside the turntable. When going from the line level RCA out of a turntable with an internal phono preamp or the line level outputs from an external phono preamp to the inputs on your speakers, this connection is not needed.

    If I have 2 inputs plugged in at the same time, how does Audioengine switch between audio sources?
    Both inputs are “open” or active, so you can leave 2 audio sources plugged in at the same time.

    Should I use the volume control on the front of the HD3s or can I adjust from system volume on my computer?
    If the left powered speaker is in a convenient location, you can use the volume knob on the front panel to adjust the volume. If not, we generally recommend setting the HD3 at around 50% and adjusting the volume from your source (phone, tablet, computer, etc.).

    If I connect my Audioengine speakers to a computer, phone, or other music player, what is the ideal volume level on the speakers and music source to get the cleanest distortion-free sound?
    Every setup is different but we generally recommend leaving your speaker volume at around 11 or 12 o’clock and then using your music source (phone, tablet, computer, TV, etc.) as the master volume control.

    Can you stream music wirelessly to the HD3 with the Audioengine wireless adapters like you can with the A5+?
    Yes, an AC wall outlet near the HD3 is all you need to power the AW3 wireless receiver. Simple.

    How can I stream music from my computer to multiple Audioengine speakers or other stereo systems?
    Check out our W3 Wireless Adapter set. These adapters allow you to stream wireless audio from any device to our speakers and subwoofer.

    Some people want to upgrade the audio on their TV’s but aren’t necessarily interested in surround sound. Can I hook up Audioengine speakers to my TV instead of buying a surround sound system or soundbar?
    Audioengine speakers can be easily connected to the audio output on your TV set. Any of our speakers will provide a greatly enhanced TV audio experience with a wider soundstage and better imaging than most sound bars.

    Are two separate stereo speakers better?
    We are firm believers that two quality speakers will always sound better than one or more speakers together in a single cabinet, regardless of the amplifier or sound enhancing technology used. There are some decent one-piece speaker systems that simulate stereo and surround sound from a single source but most fall short as they can’t accurately duplicate a wide sound stage with imaging as complete and rich as Audioengine speakers.

    Is it possible to have simultaneous connections to the HD3?
    Yes, there are multiple audio inputs on Audioengine powered speakers and both inputs are “open” or active so you can leave your audio sources connected at the same time.

    How can such small speakers have so much clean-sounding, deep, tight bass?
    One of the reasons Audioengine speakers have such amazing bass in such a small package are the designs of the bass ports on each speaker. These aren’t just holes or slots in the cabinets, but specifically shaped openings with tubes designed with precise calculations. The result is incredible low end with minimal audible air turbulence. These are effectively mini-subs built into each speaker, allowing Audioengine speakers to be used with or without a separate subwoofer. It’s also worth mentioning that we don’t use any enhancement circuits to add fake bass, so what you’ll hear is real bass – low and clean.

    Can I use a subwoofer with Audioengine speakers?
    Audioengine speakers have a low end which will easily fill a room and rival floor standing speakers many times their size, but you can also connect a subwoofer (or connect Audioengine speakers to your sub’s line-level output). You can even connect our wireless W3 adapter to the HD3 for a wireless subwoofer.

    Can I drill holes in my Audioengine speakers and mount them to a wall?
    Due to the electronics, cabinet materials and finish, it’s not a good idea to drill into your speakers; however, we have provided an integrated 1/4″ threaded insert to use with wall mounts. Please note that this insert is only meant to be used for stability with platformed stands that have this feature and is not meant to hold the total weight of the speaker.

    Do Audioengine speakers have an auto-sleep, idle, or auto-power-off function? Can I leave them on all the time?
    The HD3 is equipped with a power-saving circuit that turns off the speaker’s final stage amp. The HD3 has a idle mode which activates right after you stop playing music. Due to this power-saving function, we recommend that the speakers stay on all the time.

    If my speakers are in idle mode why can I still hear a faint hum or hiss if I put my ear very close to the speaker?
    Even though the final amp stage is shut down during sleep, the pre-amp stage is still powered up so a slight hiss is not uncommon. If you have an analog audio cable plugged in to the speakers but not into anything else, it’s possible this could be picking up some noise as well.

    What if my speakers or subwoofer have a hum or buzzing sound?
    Hum or buzz in the speakers is usually caused by something external to the speakers which is coupling noise into the speaker system (either through the AC lines, wireless router, or directly from the source input). A common reason is that the entire system is set up such that a “ground loop” results. Basically, a ground loop occurs when the AC power grounds and the system signal grounds are not at the same electrical potential.

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