Audioengine

HD4 Powered Bookshelf Speakers

HD4 Wireless Bookshelf Speakers are a versatile, compact active speaker system ideal for high-fidelity audio in smaller spaces — but don't let the compact size fool you. This premium-powered, two-speaker setup offers excellent music reproduction with a sense of presentation most compact systems simply miss.

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High Notes

Analog Power Amps

The analog Dual Class AB monolithic power amps are housed inside MDF cabinets with a wood veneer & precisely tuned. Think music with a more tuneful sense-of-timing and better rhythm-and-pacing — especially from digital sources.

Best-Selling DAC Built-in

Similar to the award-winning HD3 & HD6, the HD4 has Audioengine's best-selling DAC built-in — the Audioengine D1 24-bit headphone DAC/Amp for clear-sounding audio when connecting with computers.

All-in-One Flexible Design

The HD4 is for anyone looking for a powered bookshelf speaker-system with upgraded analog amps and the convenience of USB & aptX HD. This one sits right in-between the HD3 & HD6 in terms of both size and price.

When you buy from Audio Advice, we’re also including an exclusive “Tips & Tricks" video, available only to Audio Advice customers. This video will give you some additional key tricks, and a few other tips to help you get the most out of compact bookshelf speakers like the HD4.

About HD4 Active Bookshelf Speakers

Award-winning sound in a new size

Bringing home the high-performance technology inside Audioengine's HD6 along with the convenience of the modestly-sized HD3, the HD4 is a perfect blend of the power you love to feel and the modern functionality you depend on.

Thoughtfully wrapped in precision-tuned, MDF wood-veneer cabinets, analog amps deliver warm musical sound to any audio source. Stream your music in seconds from any app or device with high-definition aptX HD Bluetooth or make a wired connection. Either way, HD4 offers the perfect upgrade for a desktop, turntable, or main living room system where space is at a premium but performance cannot be sacrificed.

Audioengine HD3, HD4 and HD6 side by side to show the differences in size

Connect your music no matter where it lives

An all-access pass to ALL of your music on any app or device, the HD4 offers wired or wireless connections including USB input from your computer, Bluetooth aptX-HD from your phone, or good old analog from that vintage turntable or prized tape deck.

Featuring Bluetooth aptX-HD for premium, extended-range wireless that allows for quick and easy connection to stream your existing music services, tune in to your favorite podcast, or listen to those carefully curated playlists from your personal music library.

Your music, your way. Anywhere you want to listen. It’s that simple.

Audioengine HD4 connection options

Small Speaker, BIG sound

The HD4 Wireless Speakers are constructed with custom Audioengine components: Aramid fiber woofers, silk tweeters, Premium Bluetooth aptX-HD, and built-in analog power amps wrapped in precision-tuned, hand-built, and finished wood-veneer cabinets. A perfect blend of cool retro looks with modern functionality. Use it to entertain guests with your collection of vinyl, or set it up on a desk to stream studio-quality sound while you work.

Audioengine HD4 with on a pair of stands in a large room

Simple to set up

No network to set up and all inputs are always ready to go. Connect a TV or turntable via the mini-jack or RCA inputs, use the onboard DAC and connect via USB to a computer, stream high res wireless with aptX HD Bluetooth, or just plug in headphones at your desk! The HD4 is an incredibly high-performance, high-value system for almost any application.

Audioengine HD4 included accessories

Why we love it

Audioengine speakers are special. In 2005, Audioengine was founded on a simple goal: Design purpose-built home music systems that sound great, are easy to use and make people want to listen to music every day. Each new product gives listeners well-thought updates and improvements inspired by all the ways people listen to their music. The HD4 is no exception. Constructed with similar custom components found in the award-winning HD6 and HD3, the HD4 boasts everything you’d expect from an Audioengine product reimagined for the space-conscious music lover.

Audioengine's built-in analog power amplifiers sound incredible compared to digital amps found in other mass-produced brands at comparable price points. The HD4 is a smart choice in home speakers without being a “smart speaker.” We love how the HD4 allows us to experience agenda-free audio and feel confident knowing we're the only ones doing the listening. Sorry, Alexa and Siri, we’re in the business of listening to music, not listening to your business. No network setup, no passwords, no hassle. Just great sound.

streaming music to Audioengine HD4 Powered Bookshelf speakers via bluetooth AptX HD

Features

  • MDF cabinets with a wood veneer & precisely tuned.
  • Analog Dual Class AB monolithic power amps.
  • Analog input for easy turntable connection.
  • Aramid fiber woofers and silk dome tweeters.
  • Best selling Audioengine D1 24-bit USB DAC/Amp built-in.
  • Latest and greatest Bluetooth 5.0 specification w/ 100ft wireless operating-range.
  • Qualcomm’s aptX and aptX HD Bluetooth tech for CD-like audio quality.
  • 3.5mm stereo mini-jack, USB, RCA L/R, Bluetooth.
  • Subwoofer Output.
  • Versatile playback in any room, from any app or device.
  • High-fidelity stereo sound for desktops and small spaces.
  • Modern, compact design that fits in and fills up any room.
  • Available in 2 colors (black and walnut).
  • Input voltages: 110-240V 50/60Hz auto-switching
  • SNR: >95dB (typical A-weighted)
  • THD+N: <0.05% at all power settings
  • Crosstalk: -50dB
  • Input bit depth/sample rate: u24-bits upsampled
  • Supported codecs: aptX HD, aptX with very low latency, aptX, AAC, SBC
  • Wireless operation range: Up to 100ft (30m) typical
  • Wireless latency: ~30 milliseconds (ms)
  • Input data rate: Determined by Bluetooth
  • Weight (both speakers): 15 lbs
  • MDF cabinets with a wood veneer
More Information
SeriesHD
Weight15.00 lbs
FeaturesAccepts Balanced Headphones, Amp Built In, Bluetooth Audio Streaming, Bluetooth Enabled, Headphone Amp, Headphone Out, Includes a DAC, Multiple Outputs, Removable Power Cord, USB, USB DAC, USB Output, Wired, Wireless
Included AccessoriesLeft and right banana connectors, left and right RCA cables, 3.5mm stereo mini-plug
Amp ClassDual Class AB monolithic
Amp Power Output120W peak power total (30W RMS / 60W peak per channel), AES
Bluetooth ProfileBluetooth receiver type 5.0 audio
DAC24-bit DAC/Amp
Design2.0 powered (active) bookshelf-style speaker system
DimensionsEach speaker: 9" H x 5 1/2" W x 6 1/2" D
Drivers4″ Aramid fiber woofers, 3/4” silk dome tweeters
enclosureMDF cabinets with a wood veneer
Frequency Response60Hz-22kHz +/-1.5dB
Inputs3.5mm stereo mini-jack, USB, RCA L/R, Bluetooth
OutputDual RCA variable
Peak Power120W
Ported DesignYes
Subwoofer OutputYes
Supported Audio FormatsaptX HD, aptX with very low latency, aptX, AAC, SBC
Total Amp Power120W peak power total (30W RMS / 60W peak per channel)
Tweeter3/4” silk dome
Woofer4″ Aramid fiber
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