ESS Heil AMT-1 - Air Motion Tech Excellence

In 1972, Dr. Oskar Heil developed a new high frequency transducer technology he dubbed, the AMT ("Air Motion Transformer").  The AMT-1 design differed from previous driver technologies by using a folded mylar membrane with metallic traces embedded in its surface.  The pleated assembly is then suspended between magnetic "poles."  As an audio signal passes through the pleats, it reacts to the magnetic flux and compresses the air in between the pleats at a very high velocity.  This accordion-style motion creates sound and the results are highly efficient and accurate. 

There's something uniquely special about this design.  On the surface it's a simple 2-way, but the Heil tweeter adds a certain clarity and presence that's hard to explain.  The sound seems like it's coming from everywhere yet imaging and instrument placement are right where they should be.  NO listening fatigue, even at high volumes, for long periods of time, the AMTs sound smooth, refined and clean.  

The long-throw 12" bass driver combined with strategic porting provides low-end punch that is able to keep up squarely with he AMTs pursuit of high range perfection. And this set in particular is completely run through by our in-house speaker techs and perform perfectly. Solid 8-8+ condition with some light signs of wear. Performance is exemplary and a 10+... They are really good!!

Demo these wonderful ESS AMTs in our Andover, MA showroom.  Take an opportunity own a piece of historic audio tech. A truly fabulous pair. 

$999/pair (plus applicable sales tax)

* Note, shipping only by freight. Please enquire.