ERSE Inductors,

ERSE manufactures the finest audio coils in the world today! This is evident in the fine “Q” series of coils listed on the right that we manufacture for the world’s finest quality speaker manufacturers. This is a bold statement, but with our 42 years of experience we are confident that you will not find a better audio coil anywhere; not Germany, not Denmark, not China, nor the USA. Quite simply put if you want the best sound from your system your choice should be none other than ERSE’s Q line of coils.

Quality coils begin with quality components. All of our “Q” series offer our PURITY GUARANTEE. This states that we will not manufacture any “Q” series coils unless the wire meets 99.99% pure copper and meets the criteria of oxygen free. Our wire is made from CDA 101 copper cathode while most of our competitors wire is made from CDA 110 or less, which is a lower grade of wire commonly used in lamp cord and can offer a purity level as low as 97.3%! We constantly monitor our wire purity by sampling production and have it tested at a metallurgic lab to insure it is made from CDA 101 oxygen free copper; this is our guarantee.  

So if you are looking for the best coils on the planet look no further than ERSE’s “Q” series of coils.