HD4 Home Music System w/Bluetooth aptX-HD

If you are experiencing issues with your speakers when connected via USB on a Windows 10+ operating system, it might be due to the DCH (Declarative, Componentized, Hardware Support Apps) drivers. While DCH drivers offer many benefits, they can sometimes cause compatibility issues with USB audio devices, resulting in problems such as delays when sound starts, poor audio quality, or the speakers not being recognized properly.

Solution: To resolve these issues, we recommend switching from DCH drivers to non-DCH (standard) drivers. Here’s a step-by-step guide to help you do that:

1. Uninstall the Current DCH Drivers:
   • Open the Device Manager on your PC.
   • Locate your audio device under "Sound, video, and game controllers."
   • Right-click on the device and select "Uninstall device."
   • Ensure you check the option to delete the driver software for this device to completely remove the DCH drivers.
2. Download the Non-DCH Drivers:
   • Visit the support website of your motherboard or computer manufacturer.
   • Navigate to the driver download section and find the non-DCH Realtek (or appropriate) audio drivers for your system.
3. Install the Non-DCH Drivers:
   • Download and run the installer for the non-DCH drivers.
   • Follow the on-screen instructions to complete the installation process.
4. Restart Your PC:
   • After installing the non-DCH drivers, restart your computer to apply the changes.

By switching to non-DCH drivers, the compatibility issues with your USB speakers should be resolved, allowing you to enjoy optimal audio performance.

Additional Tips

• Check for Firmware Updates: Ensure your speakers have the latest firmware installed. Visit the manufacturer’s website for firmware updates that may improve compatibility and performance.
• USB Ports: Try connecting your speakers to a different USB port to see if the issue persists.
• Contact Support: If you continue to experience issues, please contact our customer support team. Provide details about your operating system, motherboard model, and the specific problems you are encountering.

We hope this helps you resolve any issues and enhances your experience with our speakers. If you have further questions or need assistance, don’t hesitate to reach out to our support team.

1. Turn Off and Unplug:

• Make sure your system is turned off and unplugged.

2. Dust the Surfaces:

• Use a soft, dry cloth to wipe away dust.
• For hard-to-reach places, use a soft brush or a can of compressed air.

3. Wipe Down the Exterior:

• We do not recommend using any solvents
• If cleaning off stains or build-up is necessary, we recommend doing so with a very small amount of mild cleaning solution applied only to the affected area, followed by quickly wiping the area dry completely. 
• Any scoured pads or objects like a 'magic eraser' too easily run the risk of removing sealers and top coats of the painted finish that can leave a clearly visible change in the uniformity of the paint/finish

4. Clean the Speaker Grills:

• The speaker grills can be gently cleaned with a vacuum, preferably using a soft bush attachment.
• A lint roller can also be used.

5. Clean Buttons and Knobs:

• A dry cloth is recommend for cleaning any knobs, buttons or other surfaces
• Be careful not to let water get into any gaps.

6. Clean Ports and Connections:

• Use compressed air to blow out dust from ports and connections.

7. Let Everything Dry:

• Make sure everything is completely dry before plugging back in and turning on.

8. Regular Cleaning:

• Dust your system regularly to keep it in good shape.

By following these steps, you can keep your Audioengine system clean and working well.

The size of the speakers are 9"H x 5.5"w x 6.5"D each

HD4 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.

The HD4 speakers do include detachable magnetic grills. The grills have thin rubber pads to prevent marks or damage to the finish or the cabinet, so your HD4s will keep looking great even if you like to remove / replace them frequently!

Absolutely! The HD4 offers wired or wireless connections to any phone or tablet using the aux audio input or Bluetooth aptX-HD. For wired connections to newer devices without a headphone jack, you'll need the correct USB-A adapter cable to connect from your tablet to the USB input on the HD4. These are generally available from the manufacturer of your tablet/smartphone, local electronic stores, or even online retailers.

Yes, you can. The HD4 speakers use a switching power supply so it will automatically convert to the different voltage. The power cable is also detachable which makes it convenient to replace the AC plug with a different type if you don’t want to use an adapter plug.

Sure, for HD4 you will need an inverter that can supply about 50-60 watts.

While the HD4 has a fantastic 24-bit DAC, you can always run your own external DAC to the speakers by connecting to the analog inputs.

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.

Yes! All Audioengine powered speakers have multiple audio inputs. Both analog inputs (3.5mm and RCA) are active, so you can connect multiple audio sources at the same time. 

The digital inputs are slightly different, though. Both the Bluetooth and USB inputs share an internal DAC. In this case, the Bluetooth input will take precedence over the USB connection. This means that the Bluetooth input will mute the USB input's audio playback. Simply disconnect your Bluetooth device from the HD4 speakers to resume playback from your USB source device.

You should be able to use multiple sources with the HD4s just fine. The analog inputs on the HD4 are always active. They will play at the same time as the Bluetooth or USB input. Bluetooth and USB share the DAC though, so you can only listen to one at a time, and Bluetooth takes priority. If you're using USB for example, and start using Bluetooth, USB will mute and Bluetooth will take over. If you pause or disconnect from Bluetooth the speakers will automatically switch back to USB after a few seconds.