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【Voltage Compatibility】
When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.
【Plug Type】
Our products use Japanese plug types (A or B type).
Please use a conversion adapter if necessary.
【Important Note on Transformers and Adapters】
A transformer adjusts voltage to match your device’s requirements.
A conversion adapter only changes the plug shape and does not adjust voltage.
Using only a conversion adapter without a transformer may result in damage to the product.
【Liability】
We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer.
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<480Mbps High-Speed Transfer for Perfect Audio Data Reproduction> Fully compatible with USB 2.0 HS mode (480Mbps), enabling zero-compression transmission of high-resolution audio sources such as DSD256 (11.2MHz) and PCM 384kHz/32bit. A uniquely developed isolation transformer prevents packet loss during USB isochronous transfer. Eliminates the "popping" sound that occurs during multi-track recording with DAW software or live streaming. Equipped with all standard terminals (Type-C/Micro-B/A), it is compatible with a wide range of devices, from the latest DAPs to legacy audio interfaces.
<Medical-grade 1500V isolation for a revolution in sound quality> The Analog Devices ADuM3165 isolation chip physically blocks ground loop noise flowing in from the USB port of a PC/smartphone. With industrial-grade isolation strength of 1500VDC, it achieves noise immunity at the level required for electrocardiogram monitors (IEC 60601-1 standard). In audio systems, it reduces the "buzzing" background noise that occurs when digital signals are transmitted to the DAC by 98%, guaranteeing complete silence even during silent passages in classical music performances. It also functions as a lightning surge protector, shielding expensive headphone amplifiers from voltage spikes.
<Optimized device compatibility with dynamic power supply system> The built-in isolation power supply (5V/200mA) can drive most portable DACs. When connecting high-power devices, it automatically switches to an external 5V adapter (Type-C input). Even when connecting vacuum tube headphone amplifiers with volatile current demands, it prevents "volume fluctuations" caused by voltage drops. Dual protection circuits for USB bus power and external power supply reduce the risk of equipment damage in the event of overcurrent/short circuit accidents.
<Plug-and-Play Design for Multi-OS Environments> Driverless operation compatible with Windows/macOS/Linux/Raspberry Pi. Fully supports USB control/bulk/interrupt/isochronous transfer. In the office, connect a Windows PC and USB-DAC to reduce feedback in conference systems, and in your home studio, eliminate click noise between your Mac and audio interface. With hot-swap functionality that eliminates the need for a restart when restoring the system, it is also suitable for connecting continuous monitoring equipment in medical settings.
<Compact body with industrial equipment protection function> Despite its ultra-compact design of 55 x 41 x 19 mm, it operates stably in harsh environments from -20°C to 85°C. When connected to a control PC for semiconductor manufacturing equipment, it prevents malfunctions caused by electrostatic discharge (ESD). In audio systems, it can be stored in narrow gaps in AV racks, eliminating unsightly tangled wires.
The "Nobsound U8 PRO" is a next-generation USB isolator that applies medical device development know-how. Its 1500V isolation technology and 480Mbps high-speed transfer break down the "last wall of sound quality degradation" between PCs and DACs. It physically blocks ground loop noise, a common problem for audiophiles, and packs the reliability demanded by industrial equipment users into a compact body. It's a sound quality cleansing device you'll want to use for a lifetime.