AUDIOCULAR - Note Plus KT0231H USB-C DAC & PD Charging Adapter

AUDIOCULAR Note Plus is a compact USB-C DAC and charging adapter designed for users who want wired audio and device charging through a single portable accessory. Powered by the KTMicro KT0231H digital audio chipset, it supports digital audio conversion up to 32-bit/384kHz and UAC 2.0 connectivity for compatible USB-C devices. The supplied specification sheet identifies the KT0231H chipset and describes the product as a USB-C to 3.5mm audio + USB-C charging adapter.

Its dual-output configuration combines a 3.5mm TRRS female audio port with a dedicated USB-C female charging port, allowing compatible devices to play wired audio while charging at the same time. With PD3.0 fast charging up to 60W / 20V 3A, Note Plus is designed for convenient everyday use with supported smartphones, tablets and computers. Maximum charging performance depends on the connected device, charger and cable supporting the required PD profile.

For audio performance, Note Plus offers a rated 118dB signal-to-noise ratio and -85dB THD+N at 1kHz, while supporting compatible 16–32Ω earphones and headphones. These specifications help provide a clean, low-noise signal path for everyday wired listening.

The adapter also supports My AUDIOCULAR, giving users access to a 6-band EQ for personalized sound tuning. Adjust different frequency regions to better match your earphones, headphones, music preferences and listening style.

With its 16-bit/48kHz ADC, 3.5mm TRRS interface and headset support, Note Plus also enables compatible microphone, calling and inline-control functions. The supplied compatibility information shows support for music, charging, controls, recording and calls across a range of compatible USB-C devices, although individual functions can vary by device.

A premium aluminum-alloy shell gives Note Plus a durable metallic finish while maintaining a compact and portable form factor suitable for everyday carry, travel, office use and mobile listening.