> For the complete documentation index, see [llms.txt](https://qudelix.gitbook.io/home/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://qudelix.gitbook.io/home/5k-plus/key-specification.md).

# Key Specification

#### Qualcomm QCC5181 Bluetooth Chipset <a href="#qualcomm-qcc5124-bluetooth-chipset" id="qualcomm-qcc5124-bluetooth-chipset"></a>

* Bluetooth 6.2 Class 2 2.4GHz
* aptX Adaptive, Sony LDAC, AAC, aptX-HD, aptX, SBC
* Qualcomm® cVc™ noise cancellation technology
* Multi-Point Pairing
* High Sensitivity 3-D LDS (Laser Direct Structuring) Antenna

#### High-Resolution USB DAC <a href="#high-resolution-usb-dac" id="high-resolution-usb-dac"></a>

* Max. 96KHz / 24-bit
* USB MIC
* USB Audio Class 1.0
* Windows/MacOS/Linux/Android/iOS (No Device Driver required)

#### Dual ES9219 SABRE HiFi® DAC <a href="#dual-es9219-sabre-hifi-r-dac" id="dual-es9219-sabre-hifi-r-dac"></a>

* Dual ES9219
* 3.5mm 80mW per channel
* 2.5mm 240mW per channel
* High Precision MEMS Audio Clock

#### Digital Signal Processor <a href="#digital-signal-processor" id="digital-signal-processor"></a>

* 30-band Double Precision GEQ/PEQ
* Crossfeed
* Mic Pass-Through Mode (Ambient Sound)

#### PC & Mobile App <a href="#pc-and-mobile-app" id="pc-and-mobile-app"></a>

* iOS/Android Mobile App over Bluetooth link
* PC(Windows, MacOS, Linux) Chrome App over USB link
* Firmware update OTA or USB

#### Chassis <a href="#chassis" id="chassis"></a>

* Five Buttons & Two LEDs
* Plastic Body (Black) with anti-scratch UV Coating
* 52.8 x 26.7 x 15.6mm (including Clip)
* Weight 26g

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