The Intona high speed isolator supports USB full speed 12Mbps and hi-speed 480Mbps and provides galvanic isolation between the USB host and device and protects the device from power shocks and avoid ground loops that can be very troublesome in audio.

It supplies the connected device 500mA (same as standard USB port) without any additional power supply, or you can connect external power and deliver up to 2000mA. This version support 5kV signal and power isolation and 20kV ESD protection.

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Specifications

New: auxiliary power input
The secondary side may be powered by an external power feed with up to 2000mA for energy-hungry devices via Micro-USB. The power switching between internal and external supply is done automatically.

  • Provides galvanic isolation to the USB bus
  • Compliant to USB 2.0 Hi-Speed (480 MBit/s)
  • Backwards compatible to Full Speed and Low Speed
  • Isolation withstands 5kVRMS
  • Advanced ESD protection (20kV)
  • Works out of the box, no drivers needed
  • Transparent to host and device: wide compatibility to all operating systems, embedded systems and devices
  • Works also with hubs and extenders
  • Supports all USB-specific transfers and modes
  • No additional round-trip latency
  • Powered by USB bus, no separate power supply
  • Ultra-quiet power rail isolation, linear regulation (LT3045)
  • 500mA (internal DC/DC) or 2000mA (aux supply) output current on isolated side
  • Status LED showing bus state and speed
  • Impedance controlled high-speed circuit design
  • National compliances: FCC, CE, RCM, ICES-003
  • IP 54 Aluminum housing
  • Dimensions: 120 x 30 x 70 mm
  • Made in Germany
Note: USB Cable not included
What is the difference from the other USB isolators?
The 7055-B version support a high 5kV signal and power isolation and 20kV ESD protection. For audio usage you generally don’t need as much as 5kV so you can consider the 7055-C model that is similar to the 7055-B but also supports SuperSpeed and has a lower ultra low noise DC supply.
Does it require a driver or special setting?
No. Similar to a USB hub, the isolator is “transparent” to the computer and doesn’t require any driver or configuration in settings.
Does it support USB 3.0 and 3.1?
Yes it works with USB 3.X ports. It will max out at 480Mbps, meaning if you connect a USB3.0 hard drive you will not get transfers at 5Gbps speeds. Audio devices doesn’t need more than 480Mbps, so it will be sufficient. Most devices that require USB galvanic isolation doesn’t require 5gbps.
Does it support asynchronous USB?
Yes it supports all USB types, the isolator doesn’t care, it just passed on the data to your computer.
Will it improve the sound quality from my DAC?
It depends on your DAC, computer and electrical environment. If you have a ground loop then it will be removed by using a USB isolator. Additionally the isolator will clean up the 5V DC from your computers USB port. Some computers have very noisy USB power, while other are not so noisy, so the difference will depend on the starting point.
Is it sure to fix the noise I’m getting from my sound card/microphone/midi keyboard/other device?
It will fix noises that are caused by ground loops, often presented as whining, buzz or loud shh noises. However some noises are have other causes. For example the microphone preamp might be noisy by itself, or an electric guitar might pick up noise in the air from other equipment. For those noises USB isolation and better quality, low noise DC power will probably not help much.
Model: 7055-B