A Perfect Connection Between Digital and Analog

The SoundKing USB-C to XLR CXA051 adapter / DI box is designed to bridge the gap between the digital audio world and professional sound systems. It allows direct connection between smartphones, laptops, or tablets with a USB-C port and powered speakers, mixing consoles, and professional PA systems.
This is a highly reliable and high-quality solution intended for sound engineers, musicians, technicians, and content creators who require a clean, stable signal without distortion.

Uncompromising Sound Quality
The adapter is based on a high-quality DAC chip for digital decoding, ensuring precise, balanced, and noise-free audio.
Thanks to the use of high-quality audio transformers, the signal is transmitted in complete isolation—preventing background noise, hum, or electrical interference.
The CXA051 provides a balanced mono XLR output, suitable for professional studio work and live sound systems.

Control and Ease of Use
A conveniently placed volume knob on the adapter allows precise control of the output level.
In addition, it includes a ground switch that helps eliminate noise caused by grounding differences within the system.
The combination of simplicity, control, and convenience makes this adapter an ideal tool for sound engineers, music creators, and field technicians.

Reliable and Durable Passive Design
The adapter operates completely passively, requiring no batteries or external power supply.
Its compact and rugged construction ensures high reliability, even under intensive daily use.
This makes it a perfect choice for anyone looking for a portable, durable, and easy-to-use adapter in any environment.

Technical Specifications – SoundKing CXA051

Input Connection: USB-C (supports compatible digital devices)
DAC Interface: Digital-to-Analog Audio Decoding Chip
Output Connection: Balanced XLR (Mono Output)
Level Control: Built-in Volume Knob
Ground Switch: For noise reduction
Operation Type: Passive – no external power required
Signal Isolation: Transformer-based isolated signal transmission
Cable length 1.5m

Summary
The SoundKing CXA051 USB-C to XLR adapter provides a professional solution for transmitting high-quality digital audio to analog equipment. It offers a rare combination of simplicity, reliability, and excellent sound quality—all in a durable and easy-to-use design.

Technical Specifications

Type
Passive

Digital Audio (DAC – USB-C)

Sample Rate: 96 kHz
Bit Depth: 24-bit

Audio Performance

Frequency Response: 50 Hz – 20 kHz (±0.3 dBu @ 0 dBFS)
THD + Noise: ≤ 0.1% @ 1 kHz (0 dBFS)

Output Level

-80 dBu to -6 dBu

Electrical Characteristics

Dielectric Strength: 500V DC / 1mA / 1 sec

Connections

Input: USB-C (Digital Audio)
Output: Balanced Mono XLR

Connectors

USB-C
XLR 3-pin (Balanced Male Output)

Controls & Features

Volume Control Knob
Ground Lift Switch (Noise Reduction)

Construction

Housing: Black Aluminum Alloy
Length: 1.5m
Weight 100g

CABLES & ACCESSORIES

Soundking CXA051 cable with passive DI box USB-C to Male XLR