Datasheet OEM & Bulk orders We can supply selected Hifime Product in bulk quantities for companies, manufacturers, laboratories, universities and government departments. Formal quotes and pro forma invoices are available, read more. The Hifimediy USB galvanic isolator is used to prevent ground loop noises and increase sound quality. It works by creating a new ground for the USB device so it doesn’t have to share ground with your computer and other devices that you might have connected in your house. This will prevent ground loops (but not all noises you might experience as not all noises are caused by ground loops). It will also protect the USB device and host from electrical shocks or static electricity shocks. It can improve the quality of the DC voltage that powers the USB device. This can improve performance of sensitive equipment like audio converters. This Isolator doesn’t require an external power supply. It features an isolated, regulated DC-DC module which is powered from the USB host (computer) and can give out 200mA, sufficient for commonly used USB equipment (but not all – check your device’s power requirement!). Power is filtered with an LC filter featuring quality Sanyo OSCON caps. It features a professional-grade isolation chip, ADUM4160, and with an optimal layout, it features signal isolation capability of 5000V and voltage isolation of 3000V. A low noise regulator is used to power ADUM4160 and a low noise DC-DC converter gives a clean 5VDC power to the connected USB device. USB Full Speed 12Mbps is sufficient for sample rates up to 96kHz/24bit. It will not work with DACs supporting 192kHz/24bit sample rates as this requires USB “High Speed” 480Mbps. High-Speed isolator available here: Hifime High-Speed USB Isolator. Features Signal Isolation 5kV Voltage Isolation 3kV Built-in 200mA power supply from USB bus (no external power supply required) Power supply LC filter Copper ground ADUM4160 supports USB full-speed 12Mbit/s, but not high-speed 480Mbit/s. Also supports USB “Low speed” 1.5Mbit/s (two internal switches need to be moved to the L position). Alternatively, look here for the high-speed version that also supports low speed natively Size: 55x35mm cable 10cm Compatibility Works with stereo DACs that support sample rates up to 96kHz/24bit and that don’t require too much power. Supports other USB devices that run on USB Low or Full speed modes. High Speed mode 480Mbit/s is not supported (see here for the other version) DOES NOT WORK WITH high-resolution 384kHz or 192kHz DACs (they require USB High Speed mode) – even when you play only 44.1kHz files. New High-Speed isolator here: Hifime High-Speed USB Isolator DOES NOT WORK WITH multi-channel DACs/sound cards. They also require High Speed mode. Supports Low speed devices (mouse, keyboards, some MIDI converters) through an internal switch. You need to open the box and move both switches to the L position. Some computers will not wake up the isolator after sleep/standby; disconnect and reconnect the isolator. Works with M-Audio MKII card, and most USB mics. Confirmed working with Prophet 12 synthesizer and other synthesizers (for MIDI). Does not work with Focusrite sound cards! FAQ Will the USB Isolator get rid of my noise? Buzz noises are often ground loop problems, and this is exactly what the USB isolator will remove. However, the noise you’re experiencing might be caused in another way and might not be removed by the isolator. We accept returns when it doesn’t work or remove the noise from your device. Will it work with my DAC? It works with DACs that support up to 96kHz/24bit, but it does not work with 192/24 sample rates. Some DACs may also require more than 200mA of power, especially if they have a headphone amplifier or a MCU that draws more power. New High-Speed isolator available here: Hifime High-Speed USB Isolator (supports sample rates above 96/24). Do you offer warranty? Yes, we offer a 1-year warranty on all our products. Shipping costs for returns must be covered by the customer. We have return addresses in the USA, UK, Germany, and China. Troubleshooting It doesn’t work, do I need to install a driver? The USB isolator is “transparent” to the computer, so there are no drivers to install. However, it doesn’t work with all USB devices. Your device may require more power than the isolator can provide or may need USB High Speed mode (480Mbps). Some further explanations (also see our USB isolator guide): USB ports supply up to 500mA of power, but the USB isolator only outputs a maximum of 200mA. Devices that require more than 200mA may not work with the isolator. If your sound card has mic preamps or other power-hungry features, it may not work if powered only by USB. If your DAC supports sample rates above 96kHz/24bit, it requires USB High Speed (USB Audio class 2) and will not work with the isolator. Multi-channel sound cards with 4, 8, or more channels also require USB High Speed mode. Model: ISO-2
Hifimediy USB Isolator
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