Audioengine HD4 Next Gen is a 2-way Powered Bass Reflex Bookshelf speaker by Audioengine. It was released in May 2025. HD4 Next Gen's built-in amplifier provides 60-watt RMS( 120-watt Peak). The built-in power amplifier saves space & eliminates the need to connect Audioengine HD4 Next Gen to a stereo receiver or external power amp. It features a 0.75" Soft-Dome Tweeter and 1 x 4" Aramid Woofer. The speaker has a frequency range of 60-22k Hz. Audioengine HD4 Next Gen has an MSRP of 429$ per pair.
Audioengine replaced the older HD4 with this model. Follow the link to read our detailed comparison of these models:
Compare Audioengine HD4 Next Gen vs Audioengine HD4
Audioengine's HD Series of Loudspeakers
HD4 Next Gen is a member of Audioengine's HD series of Powered speakers. The HD range is Audioengine's premium powered speaker line, adding Bluetooth aptX and upgraded cabinets and drivers. Below you can see the main specs of these speakers.
See all 5 Audioengine HD models compared »
Audioengine HD Series Speakers
Frequency Response of the Audioengine HD4 Next Gen Speaker
Audioengine HD4 Next Gen has a Frequency response range of 60-22k Hz at ±1.5dB. With a minimum frequency of 60 Hz, HD4 Next Gen delivers moderate bass depth so depending on your use case, you might want to consider adding a subwoofer to your system.
Here we have a comparison of how HD4 Next Gen's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Bookshelf Speakers
Thinking about a subwoofer for the Audioengine HD4 Next Gen?
Crossover frequency of the Audioengine HD4 Next Gen?
The crossover frequency of the HD4 Next Gen is set to 3000Hz. This is the threshold frequency where the higher frequency signals over this level are sent to the tweeter and the lower-frequency signals are sent to the woofer by the crossover component.
Handheld Remote
Audioengine HD4 Next Gen comes with a handheld remote which is obviously very useful to control your powered speakers from a distance.
Bluetooth Connectivity
Audioengine HD4 Next Gen employs Built-in 5.3 Bluetooth for wireless music streaming from your Bluetooth-enabled devices such as Apple iPod/iPhone/iPad, Android smartphone/tablet, Windows PC, Mac computers/laptops. HD4 Next Gen can playback up to 24-bit / 96 kHz with compatible devices.
Audioengine HD4 Next Gen supports the following Bluetooth Codecs when used with supported devices:
- aptX Adaptive
- aptX HD
- aptX
- AAC
- SBC
Inputs and Outputs
- 3.5mm Minijack Input
- RCA Input
- USB Port: USB-C
- RCA variable line-out Subwoofer Output
- Headphone Jack: 3.5mm
Audioengine HD4 Next Gen External Dimensions and Weight
Audioengine HD4 Next Gen has external dimensions of (Height x Width x Depth) 9 x 5.5 x 6.5inch (228.6 x 139.7 x 165.1mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of Audioengine HD4 Next Gen is approximately 230.6cm2 / 35.7inch2.
Find speakers that fit your shelf or alcove → · Work out where they should sit in the room →
Weight The speaker with the built-in amplifier weighs 3.20kg / 7lbs whereas the other speaker weighs 2.40kg/ 5.3lbs. Here is a comparison of how HD4 Next Gen's weight compares with the average, max and min weights in its class.
Weight
All Bookshelf Speakers
Weight
Bookshelf Speakers under $500
How does the Audioengine HD4 Next Gen compare to the Audioengine HD5?
One of the natural alternative to the Audioengine HD4 Next Gen is the HD5 which is located one step higher in Audioengine's Powered Bookshelf selection.
Check the Detailed Comparison of Audioengine HD4 Next Gen vs HD5 for more details.
Cabinet type and Materials
Audioengine HD4 Next Gen has a
Bass Reflex type cabinet. Bass Reflex type loudspeakers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs.
Port Position
Audioengine HD4 Next Gen is a front-firing port speaker, which gives you more flexibility compared to rear firing speakers when you need to place it close against a wall or other surfaces.
Available colors
Audioengine HD4 Next Gen is available in Satin Black, Walnut and Hi-Gloss Piano White.
Wall Mounting
HD4 Next Gen doesn't sport any built-in mounting bracket, so you need an external structure to mount it on walls.
Does the Audioengine HD4 Next Gen come with a Grille?
HD4 Next Gen comes with magnetic grilles in Black color choices. The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound to pass as clearly as possible. Since the included grille of the HD4 Next Gen is magnetic type, it is very easy to put it on and off.
What's in the Box of Audioengine HD4 Next Gen?
Here are the items that are included inside the box of HD4 Next Gen:
- Powered left speaker
- Passive right speaker
- Bluetooth antenna
- Banana plug speaker cable
- AC power cord
- USB-C cable
- Mini-jack audio cable
- RCA audio cable
- 2 microfiber speaker bags
- 2 microfiber cable bags
- Setup guide
Recommended Accessories
Here is a list of accessories that we think you may need for the Audioengine HD4 Next Gen.
- Vibration Isolators: IsoAcoustics isolators are our favorite isolators but you may find more affordable options too.
- Acoustic Panels and Treatments: Your room is as important as your stereo equipment so acoustic treatments goes a long way in improving the overall performance.
- Speaker Stands: Stands bring your bookshelf speakers to ideal height (rule of thumb is to have the tweeter level with your ear in your listening position), helps stability and acoustical isolation.
Official Product Page
Official manufacturer's product page for the Audioengine HD4 Next Gen speaker can be found below:
Official Product Page for Audioengine HD4 Next Gen
Warranty
3 Years of parts warranty and 3 Years of labor warranty is generally provided by the manufacturer.