Introduction
The Harman Kardon Adapt is a wireless HD audio stereo adaptor designed to integrate with your existing Hi-Fi audio equipment. It enables high-resolution audio streaming throughout your home, providing a pure and crisp sound experience. This adaptor allows for flexible audio configurations, including multi-room playback, party mode, and stereo or multi-channel surround sound setups.
Key features include:
- Wireless audio streaming in every room.
- Ability to play different music in each room simultaneously.
- One-touch 'Follow Me' audio for seamless music transition between rooms.
- Control and setup via the Harman Kardon app.
- Link button for speaker control, including party mode activation.
- Supports 24bit / 96kHz Studio Quality HD audio streaming.
- Compatibility with popular music applications.
What's in the Box
Carefully unpack all components and ensure the following items are present:
- Harman Kardon Adapt Wireless HD Stereo Adaptor
- Quick-start Guide
- USB power supply
- Regional power pin(s)
- Safety & Warranty Sheet
Setup
Follow these steps to set up your Harman Kardon Adapt:
- Power Connection: Connect the USB power supply to the Adapt and plug it into a power outlet.
- Audio System Connection: Use an appropriate audio cable (not included) to connect the Adapt's Audio Out port to your existing Hi-Fi system's audio input. Alternatively, you can connect an audio source to the Audio In port.
- Download the App: Download the Harman Kardon Controller app from your device's app store (iOS or Android).
- Network Configuration: Open the Harman Kardon Controller app and follow the on-screen instructions to connect your Adapt to your home Wi-Fi network. This process typically involves selecting your Wi-Fi network and entering the password.
- Pairing (Optional): If you have multiple Harman Kardon Omni products, use the app to group them for multi-room audio or stereo/surround sound configurations.

Figure 1: Rear panel of the Harman Kardon Adapt, illustrating the various input and output ports for power and audio connections.

Figure 2: Top view of the Harman Kardon Adapt, showcasing its compact design.
Operating
The Harman Kardon Adapt offers various ways to enjoy your audio:
- App Control: Use the Harman Kardon Controller app on your smartphone or tablet to select music sources, control playback, adjust volume, and manage multi-room audio configurations. You can stream music from various services or your device's local library.
- Multi-Room Audio: With multiple Adapt units or compatible Harman Kardon Omni speakers, you can stream different music to different rooms or play the same song throughout your entire home in 'Party Mode'.
- One-Touch Follow Me Audio: If you have multiple devices, a single button press can transfer the currently playing music from one room to another as you move.
- Link Button Speaker Control: The physical link button on the Adapt allows for quick control. A short press cycles through different music streams if multiple are playing. A long press activates 'Party Mode', synchronizing all connected speakers to play the same music.
- Bluetooth Streaming: Connect your device via Bluetooth to the Adapt. The Adapt can then re-stream this Bluetooth audio to other connected Harman Kardon Omni speakers in your home via Wi-Fi.
- Aux-in Re-streaming: Connect an external audio source (e.g., TV, CD player, iPod) to the 3.5mm mini-jack 'Audio In' port. The Adapt will automatically convert this signal to Wi-Fi and stream it to other speakers in your home, providing a flexible whole-home audio experience.
- Multi-Channel Surround Sound: Pair two Harman Kardon Adapt units or other compatible Omni speakers to create a stereo or multi-channel surround sound system within a single room for an immersive audio experience.
Maintenance
To ensure the longevity and optimal performance of your Harman Kardon Adapt, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the Adapt. Avoid using abrasive cleaners, waxes, or solvents, as they may damage the finish.
- Placement: Place the Adapt on a stable, flat surface away from direct sunlight, heat sources, and excessive moisture. Ensure adequate ventilation around the unit.
- Power: Always use the provided USB power supply. Disconnect the power adapter during lightning storms or when unused for extended periods.
- Handling: Handle the device with care. Avoid dropping or subjecting it to strong impacts.
Troubleshooting
If you encounter issues with your Harman Kardon Adapt, refer to the following common troubleshooting steps:
- No Power: Ensure the power adapter is securely connected to both the Adapt and a working power outlet. Try a different outlet if necessary.
- No Audio Output:
- Verify that the audio cable from the Adapt's Audio Out port is correctly connected to your Hi-Fi system's input.
- Check the volume levels on both the Adapt (via the app) and your connected audio system.
- Ensure the correct input source is selected on your Hi-Fi system.
- Cannot Connect to Wi-Fi:
- Ensure your Wi-Fi router is powered on and functioning correctly.
- Verify that you are entering the correct Wi-Fi password.
- Move the Adapt closer to your Wi-Fi router to improve signal strength.
- Restart your Wi-Fi router and the Adapt.
- If issues persist, try performing a factory reset on the Adapt (refer to the Quick-start Guide for instructions on using the Reset button).
- Bluetooth Pairing Issues:
- Ensure Bluetooth is enabled on your source device and the Adapt is in pairing mode.
- Remove the Adapt from your device's Bluetooth paired devices list and attempt to pair again.
- Ensure no other devices are actively connected to the Adapt via Bluetooth.
- App Not Responding: Close and restart the Harman Kardon Controller app. If the problem continues, restart your smartphone/tablet and the Adapt.
Specifications
| Model Number | K951331 |
| Output Voltage | >1Vrms |
| Frequency Response | 20Hz – 20kHz |
| Signal-to-Noise Ratio | >85dB |
| Input Connections | Bluetooth, Aux-in (3.5mm), Wi-Fi |
| Dimensions (W x D x H) | 118mm x 86mm x 30mm |
| Weight | 121g |
| Power Supply | 5VDC, 1.0A |
| Bluetooth Transmitter Frequency Range | 2402 – 2480MHz |
| Bluetooth Transmitter Power | <4dBm |
| Bluetooth Transmitter Modulation | GFSK, π/4 DQPSK, 8DPSK |
| 2.4G Wi-Fi Transmitter Frequency Range | 2412 – 2472MHz (2.4GHz ISM Band) |
| 2.4G Wi-Fi Transmitter Power | <20dBm (EIRP) |
| 2.4G Wi-Fi Modulation | OFDM, DSSS, DBPSK, DQPSK, CCK, 16QAM, 64QAM |
| 2.4G Wi-Fi Network Compatibility | IEEE 802.11b/g/n |
Warranty and Support
For detailed warranty information, please refer to the 'Safety & Warranty Sheet' included in your product packaging. This document outlines the terms and conditions of your product warranty.
For technical support, product registration, or additional information, please visit the official Harman Kardon website or contact their customer service department. Contact details can typically be found on the Harman Kardon website or in the included documentation.







