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EM5813 Ear Speakers - Welcome to Cardas Audio
http://www.cardas.com/em5813_ear_speaker.php
EM5813 Ear Speaker Cardas Ear Speakers are efficient, natural, musical, and are the result of years of meticulous design by George Cardas. Components of the EM5813 were manufactured in Oregon, California, and The People's Republic of China. Custom alloys were sourced from Italy, Germany and the US, magnets from China, and thin film from Japan.
Cardas Audio EM5813 Ear Speakers - The Absolute Sound
https://www.theabsolutesound.com/articles/cardas-audio-em5813-ear-speakers
The EM5813 is built from parts sourced from around the globe, using sub-assemblies mostly built in the US, with final precision assembly work handled in China, meaning the Ear Speaker is truly international in its origins. The EM5813 earpiece housings are machined from solid brass, polished, and then treated to a gleaming copper plate finish.
Cardas EM5813 Model 1 Earbuds-Audio Advisor
https://www.audioadvisor.com/prodinfo.asp?number=CREM5813
The EM5813 is every bit a Cardas Audio product from ear tip to plug. George's developments in new and improved materials that affect the magnetic field of this newly designed driver results in amazing bass performance and transfixing musicality. Even the ultra thin tips were redesigned to have a precise, comfortable fit.
Review: Cardas Ear Speakers EM5813 Model 1 | Headphone ...
https://www.head-fi.org/threads/review-cardas-ear-speakers-em5813-model-1.764763/
In the description of EM5813, it is written that “the EM5813 mirrors the human cochlea and tympanic membrane”, and also that “the hearing system, musical chords, and these Ear Speakers are reflections of the Golden Ratio”, which is not quite understandable, although this “Golden Ratio” feature is underlying many other Cardas designs.
CARDAS AUDIO Cardas - EM5813 Ear Speaker In ... - Music Direct
https://www.musicdirect.com/headphones/cardas-em5813-ear-speaker-in-ear-headphones
The Cardas Ear Speaker EM5813 mirrors the human cochlea, (nearly a Golden ratio itself) as well as the tympanic membrane. The new Cardas Ear Speakers are efficient, incredibly natural, supremely musical, and are the result of years of meticulous design by George Cardas. "The massed vocals had more body and sounded more natural.
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