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USB Reinigen

USB Reinigen


Update June 2024  - New enhanced version.

More info here


Update October 2023 - new Streamlined design.

Excellent value at $1000

To apply select "streamline" in variant select box

The USB Reinigen is a new high speed (480 Mbps) USB 2.0 isolator/re-clocker. 
It is based on the brand new Analog Devices ADUM 4165/4166 USB isolating re-clocking chips.

The main purpose for this device is to isolate and re-clock USB audio data between a digital source (such as a music server) and a digital-to-analogue converter (DAC) to maximise sound quality. 


Gieseler products are built to a high level of quality, and include a full two year parts and labour warranty. All parts are sourced from reputable suppliers such as Digikey, Element14, Mouser Electronics, and RS Components, to ensure parts meet our quality standards. Every unit is hand built in Australia by an experienced electronics audio technician.


Adding the USB Reinigen between a digital source and DAC is aimed at enhancing the sound quality in terms of separation, vocal body and general minimisation of digital edge or glare. High speed data is re-timed for jitter reduction using a low phase noise Seiko 24.0000 crystal.


Particular attention has been given to the internal power supplies as these are critical for optimal sound quality.  All regulators are ultra low noise & capacitors top quality Nichicon Fine Gold or Muse series.


The USB Reinigen also includes a double regulated 1 Amp USB A output connector, which often powers the USB input board on a DAC. The Reinigen provides a quality low noise regulated supply.  This can be very useful when connecting an external CD drive for ripping as not only does the drive receive ‘clean’ power but also the USB data is cleaned up.


Another  benefit from the  USB Reinigen apart from the the re-clocking is the fact that it provides full galvanic isolation between its two USB sockets.

What this means is there is no direct electrical connection between the USB sockets.

This is very beneficial when using  a laptop or streaming device that is powered by a switch mode PSU which most are.

With a switch mode PSU there is usually a small amount of mains leakage current that will flow along (& to) the DAC which will add noise.

By providing full galvanic isolation this leakage current path is broken & the leakage current is removed which is a good thing for audio.

This is achieved by using an extra internal EI core isolation power transformer.

It is more expensive but provides perfect low noise isolated power rather than the usual DC to DC converter which always contains some high frequency switching noise.


Lots of owner feedback here:



  • Total bidirectional galvanic isolation between in/out connections
  • USB B Input and USB A output
  • High speed 480 Mbps rating
  • Multiple ultra low noise internal power supplies
  • Precision  24.0000MHz Seiko crystal clock reference.
  • 1 Amp rated 5v USB A output connection.                                                                                                                            



Dimensions:      165mm W  55mm H  220mm D

Weight :               2.4 KG including plug pack

USB maximum data rate

480 Mbps (high speed)

Galvanic isolation

Bidirectional USB isolation for up/down stream ports

USB A output power

5v 1 Amp with double linear regulators

Power adaptor

9v AC 2.0 A linear IE core transformer (Australian 240 v)

Power consumption

2.25 W

AC power input socket

5.5mm diameter with 2.1mm centre pin.

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