New $49 High speed isolator available here: https://hifimediy.com/product/hifime-high-speed-usb-isolator-v2/
- 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 Support USB full-speed 12Mbit/s, but not hi-speed 480 Mbit/s.
- Also supports USB “Low speed” 1.5Mbit/s (two internal switches need to be moved to L position). – Alternatively look here for the hi-speed version that also supports low speed natively
- Size: 55x35mm + cable 10cm
- Works with stereo DACs that support sample rates up to 96kHz/24bit and that doesn’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 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 will also require High speed mode.
- Supports Low speed devices (mouse, keyboards, some midi converter) through 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, require to 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!
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 do accept returns when it doesn’t work or remove the noise from your device.
Will it work with my DAC?
It works with dac’s that support up to 96kHz/24bit, it does not work with 192/24 sample rates.
Also, some dac’s require more than 200mA power. This might be 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 samples rates above 96/24)
Do you offer warranty ?
Yes, we offer a 1 year warranty on all our products. We will ask you to pay shipping cost for sending the item back. We have return addresses in USA, UK, Germany and China.
It doesn’t work, do I need to install a driver?
The USB isolator is “transparent” for the computer, so there are no drivers to install. However, it doesn’t work with all USB devices. Your device does probably either require too much power, or needs USB High speed mode (480Mbps).
Some further explanation (also see our USB isolator guide)
- USB ports can supply up to 500mA of power, while the USB isolator will output max 200mA. Some devices will require more than 200mA and will not work with the USB isolator. If your sound card has mic preamps or other features that draw a lot of power, then it probably will not work if it gets all it’s power from USB.
- If your DAC supports sample rates above 96kHz/24bit, then it will require USB High Speed (USB Audio class 2) and will not work with the isolator. Also, if you have a 96/24 sound card with 4, 8 or more channels, it will also require USB High speed mode.