I have a hunch that Mr. Yamagishi, the former Sony headphone and speaker designer behind Ocharaku was drinking tea before he ever sipped into the idea of the Tornado Equaliser. That singular technology has since revolutionised the upgrade earphone market among price-conscious portable audiophiles in Japan. And with the introduction of Flat-4 SUI – and TE’s successor, TEE – in 2011, the technology has found itself in a new, better pot. Twin Equalised Elements (TEE) is the new leaf that Mr. Yamagishi turned over to create SUI and now KAEDE. If you’re interested in a few different views of KAEDE, check out Ω image’s KAEDE post.