Type: Turntable

This is a unique device for fine-tuning audio installations. It enhances its resolving capabilities by minimizing its residual ground currents.

  • Multi-tasking: it works as a voltage, phase and cable-interruption checker for domestic appliances. 
  • The LCD screen shows the values by touching the equipment-to-be-checked with the POLARITY CHECKER screwdriver blade. 
  • Measures AC 12V to 230V and DC in 12, 36, 55, 110 and 220V. It can also indicate the presence of electrical stray fields. 
  • Do not use with AC or DC voltages exceeding 250 Volts! 
  • Very safe and also very sensitive: Its leakage current is less than 3µA. 
  • Comes with carefully detailed instructions describing how to minimize residual ground current. 
  • 4 facts about residual ground currents in your audio installation:

1)    Your audio system is powered by the mains voltage and this means there’s an unavoidable residual hum present at all stages; 

2)    These residual voltages are of different magnitude (or phase) and will balance out by means of ground currents flowing through the shields of your interconnecting cables; 

3)    These ground currents share the magnitude levels of the audio signal currents being transferred (micro Amperes). That’s why they interfere and the results are reduced transparency and imaging; 

With the POLARITY CHECKER you can fine tune your audio system by dramatically reducing, or even eliminating, those residual ground currents. (Needless to say that this alone will indeed improve your sound…)


Related Items


This website is owned and operated by VAF Research (ABN 55 109 262 964) under the domain name (VAF Website). The information, graphics, text and other materials (Content) on the VAF Website is governed by these Terms of Use and the Privacy Policy available at By using this Website you agree to be bound by these Terms of Use. In addition to the Terms of Use contained in this document, other terms of use or conditions may apply to products and services offered via this Website, as separately notified to you. 


Copyright in the Content on the VAF Website is owned or licensed by VAF Research. Except where necessary for and incidental to viewing the Content on the VAF Website via your web browser, or as permitted under the Copyright Act 1968 or other applicable laws, no Content on the VAF Website may be reproduced, stored in an electronic or other retrieval system, adapted, uploaded to a third party location, framed, performed in public or transmitted in any form by any process whatsoever without our specific written consent. 


The VAF Website may contain links to websites which are owned and operated by third parties independent of us (Third Party Websites). We do not sponsor, endorse or approve of the operators of Third Party Websites or the information, graphics and material which may be found at Third Party Websites (Third Party Material). Subject to any applicable law which cannot be excluded, we make no warranties or representations:

We are not authorising the reproduction of Third Party Material by linking material on this Website to Third Party Material. All offers to sell and statements relating to goods and services available on Third Party Websites are the responsibility of and given by the Third Party Website operators. Insofar as such offers and statements are made on the VAF Website, such offers and statements are made by us on behalf of the Third Party Website operators. We expressly disclaim acting in any other respect on behalf of Third Party Website operators. 




You indemnify us in respect of any liability incurred by us for any loss or damage, howsoever caused, suffered by us as a result of your breach of these VAF Website Terms of Use, or your use of the VAF Website. 


You acknowledge and accept that your use of the VAF Website indicates your acceptance of these Terms of Use and the Privacy Policy. These are the current Terms of Use. They replace any other terms of use for the VAF Website published on the VAF Website to date. VAF Research may at any time vary the Terms of Use by publishing the varied Terms of Use on the VAF Website. VAF Research is under no obligation to specifically notify you of any variation to these Terms of Use. You accept that by doing this, VAF Research has provided you with sufficient notice of the variation. By your use of the VAF Website after any variation, you are taken to have accepted the new Terms of Use. 


The law applicable to VAF Research and the VAF Website and to disputes arising out of VAF Research and the VAF Website is the law of the State of Victoria, Australia. Should any clause or part thereof of these Terms of Use be found to be void, unenforceable or invalid, then it is severed from this agreement, leaving the remainder in full force and effect, provided that the severance has not altered the basic nature of this agreement. 


We encourage linking to the VAF website. Please contact VAF Research if you would like to link to any part of the VAF Website.