HD4 Next Gen Home Music System w/ Bluetooth aptX Adaptive

Fill any room with amazing stereo sound. The HD4 Next Gen can connect either wired or wirelessly, so you can play your music from your computer, phone, tablet, even your turntable or cassette player. Use any music app or device you like. The HD4 Next Gen also has a headphone amplifier, so you can listen to your music privately with crystal clear sound.

Pro Tip Connect your HD4 Next Gen to a desktop via Bluetooth or USB-C for improved audio. This connection bypasses the lower quality audio parts in your computer, allowing the HD4 Next Gen's built-in DAC to refine the sound.

The Perfect Harmony of Modern Design and Dynamic Sound

Now equipped with AptX Adaptive Bluetooth, the HD4 Next Gen. delivers high-resolution 24-bit audio streaming while dynamically adjusting to avoid dropouts and interruptions. Unlike standard Bluetooth codecs, AptX Adaptive works like a GPS system that continuously finds the fastest route—automatically optimizing bit rates to ensure the best possible sound quality at any moment. Whether you're moving around your home, streaming lossless music, gaming, or watching videos, the HD4 Next Gen seamlessly adjusts in real time to keep audio crystal clear and lag-free. 

Everything You Want in a Music System, Without the Cords

The HD4 Next Gen gives you the choice of connecting via USB-C, analog, or Bluetooth aptX Adaptive from your phone, tablet or computer. Bluetooth aptX Adaptive gives you CD-like quality sound and extended-range wireless that connects quickly and easily. Enjoy all of your music services, tune into your favorite podcast, or listen to anything and everything from your personal music library.

Spoiler Alert: You're Going to Love Them

• Quick and easy setup
• No network setup, no passwords, no hassle
• 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 with sound
• Built-in magnetic (and easy to remove) speaker grilles
• Digital Inputs include USB-C & Bluetooth aptX Adaptive, extended-range wireless streaming so you get crystal clear sound
• Analog input (RCA/3.5mm) for easy turntable connection
• Aramid fiber woofers and silk dome tweeters maintain the integrity of the sound
• Built-in power amps wrapped in precision tuned, hand-built and finished wood-veneer cabinets

The HD4 Next Gen Leaves You Plenty of Room to Groove

Good news! You don’t have to sacrifice sound quality when you’ve got limited space. Designed to take on space limitations, the HD4 Next Gen is the perfect choice when your surface area is minimal and exceptional performance is a priority. As stylish as they are compact, the HD4 Next Gen will easily fit in any small space and fit in with any style of decor.

But the HD4 Next Gen is more than just a pretty face. This system provides brilliant highs and thumping lows. It’s the difference between listening to your music and experiencing it.

General Specifications

Type
Powered Bluetooth aptX Adaptive speaker system

Amplifier Type
Class AB

Rated Power Output
30W RMS per channel (measured in compliance with 16 C.F.R. § 432.3)

Peak Power Output
60W per channel (AES)

Total Peak Power Output
120W (AES)

Drivers
4" aramid fiber woofers
0.75" silk dome tweeters

Inputs
3.5 mm stereo mini-jack, USB, RCA L/R, Bluetooth

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

Input Voltages
110-240 V 50/60 Hz auto-switching

SNR
Greater than 95 dB (typical A-weighted)

THD+N
Less than 0.05% at all power settings

Crosstalk
Less than 50 dB

Frequency Response
60 Hz-22 kHz ±1.5 dB

Frequency Response w/ Bass Reduction Switch selected
N/A

Analog Input Impedance
N/A

Nominal Impedance
N/A

Input Impedance
5K ohms unbalanced

Crossover Frequency
3.0KHz

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

Power Consumption
Idle: 5W

Standby Consumption
N/A

Phase
N/A

Recommended Amplifier Power
N/A

Battery Life
N/A

Battery Charge Time
N/A

Internal D/A Converter
PCM 5100A

Internal BT Receiver
Qualcomm QCC 3040

Input Bit Depth (Bluetooth)
24 bit (padded)

Bluetooth Receiver Type
Bluetooth 5.3

Supported Codecs
aptX Adaptive, aptX HD, aptX, AAC, SBC

Supported Bluetooth Profiles
A2DP

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

Input Data Rate
Determined by Bluetooth

Wireless Latency
~80 milliseconds (ms)

Connector Type (USB)
Type-C

USB Device Class
USB 1.1 or above

Input Bit Depth (USB)
24 bit (padded)

Input Sample Rate (USB)
48 kHz/96 kHz

Headphone Amp Type
OPA1602

Full-scale Headphone Output Level
300mW@32Ω (PO)

Output Impedance
2 ohms

Recommended Headphone Impedance Level
10 ohms to 10K ohms

Dimensions (HWD)
Each speaker – 9" (23 cm) x 5.5" (14 cm) x 6.5" (16.5 cm)
22.9 cm × 13.8 cm × 16.6 cm + 0.9 cm (cloth grille)

Weight
Left (active) – 7 lb (3.2 kg)
Right (passive) – 5.2 lb (2.4 kg)

Total Shipping Weight
16 lb (7.3 kg)

Shipping Box Dimensions (LWH)
20" (51 cm) x 13" (33 cm) x 15.5" (39 cm)

Operating Temperature
32°F to 95°F (0°C to 35°C)

Non-operating Temperature
-4°F to 113°F (-20°C to 45°C)

Relative Humidity
5% to 95% non-condensing

Cabinet
0.5" (13 mm) thick MDF cabinets with real wood veneer

Tweeters
0.75" (20 mm) silk dome tweeters with neodymium magnets

Woofers
4" (101 mm) aramid fiber woofers with advanced voice coils