Manuals+

HiBy W3II Bluetooth Decoding Amplifier

Product Overview

The HiBy W3II is a Bluetooth decoding amplifier featuring the latest UAT (Ultra Audio Transmission) technology. It supports high-resolution audio formats up to 192kHz/1.2Mbps and a variety of HD Bluetooth codecs, including aptX HD, aptX, LDAC, AAC, and SBC. It also supports CVC noise reduction for clear calls.

Device Description

The device features the following components:

  • ① 3.5mm headphone jack: Supports 3-segment (TRS) and 4-segment (CTIA-spec TRRS) headsets.
  • ② Microphone.
  • ③ LED indicators:
    • Red: Charging complete (solid) / Low battery or charging (flashing).
    • Blue: Bluetooth connection successful (solid).
    • Red & Blue flashing: Waiting for connection.
    • Green: Sample rate 44.1kHz – 48kHz.
    • White: Sample rate 88.2kHz – 192kHz.
  • ④ NFC: For quick Bluetooth connection (supports near-field receiving).
  • ⑤ Power button:
    • A. Press and hold for 2 seconds to turn on.
    • B. Hold down for 5 seconds to connect Bluetooth when powered off.
    • C. Short press to pause/play or answer/reject phone call.
  • ⑥ Volume+ button: Long press for previous track.
  • ⑦ Volume- button: Long press for next track.
  • ⑧ USB-C port: For data transfer and charging.

UAT - Ultra Audio Transmission Technology

What is UAT?

UAT is a high-definition Bluetooth codec independently developed by HiBy. It supports audio sampling frequencies up to 192kHz and bitrates up to 1.2Mbps. The bit rate is classified into high (1.2Mbps), mid (900kbps), and low (600kbps) grades.

How to use UAT?

UAT is compatible with all HiBy OS devices, supporting both UAT sending and receiving.

Connectivity and Control

Connecting to a Mobile Phone

1. Enter pairing mode on the W3II. 2. Enable Bluetooth on your mobile phone and navigate to Bluetooth settings. 3. Select "pair with new devices". 4. Choose "W3II" from the Bluetooth search list and confirm pairing. Pairing will be successful.

Mobile App Control

HiBy has developed a dedicated mobile application, "HiBy Blue," for its Bluetooth devices. This app allows users to perform operations such as EQ adjustments, gain control, and firmware upgrades directly from their mobile phone.

Special Functions

Clear Pairing

While the device is powered on, simultaneously press and hold the Volume+ and Volume- buttons.

RESET Option

When the device is powered on, press and hold the power button for 10 seconds.

Support and Contact Information

Official Websites

Global After-Sales Service

For after-sales service, please contact service@hiby.com or the store where you purchased the product.

Manufacturer Information

Dongguan Smartaction Technology Co., Ltd.

  • TEL: 0086-769-23182216 / 400-8820-032
  • Website: www.hiby.com
  • Email: service@hiby.com
  • Address: Room 1201, Lianjing Commercial Building, No.39, Hongwei 3rd Road, Nancheng District, Dongguan, Guangdong, China.

Important Notices and Cautions

General Precautions

  • ⚠️ Do not attempt to repair, disassemble, or place the product in water.
  • ⚠️ If the product is not used for an extended period, periodically charge it to maintain battery health.
  • ⚠️ When using headphones, be aware of your surroundings for safety, especially in dangerous environments.
  • ⚠️ Using a charger with excessively high voltage may damage the device. Please use a recommended charger.

FCC Warning

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radiofrequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separation between the equipment and receiver.
  • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio/TV technician for help.

FCC Radiation Exposure Statement: The device has been evaluated to meet general RF exposure requirements and can be used in portable exposure conditions without restriction.

Battery Usage Precautions

  • ⚠️ Improper battery replacement may result in an explosion hazard. Replace only with the same type or equivalent battery.
  • ⚠️ Batteries (battery pack or assembled battery) must not be exposed to heat, such as sunshine, fire, or similar overheating conditions.
  • ⚠️ Consumers using power adapters should purchase CCC-certified adapters that meet relevant standards.
Models: HIBYW3G2, 2AOBQ-HIBYW3G2, 2AOBQHIBYW3G2, W3II Bluetooth Decoding Amplifier, W3II, W3II Decoding Amplifier, Bluetooth Decoding Amplifier, Decoding Amplifier, Bluetooth Decoding, Amplifier
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