One of the most popular independent audio reviewer in Spain, Francisco del Pozo-san has just made remarkable video (Youtube) review (About 25 minutes) on HANA-Umami, with following conclusion, interpreted by HANA/Spanish distributor.

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he youtube can not be better
he says : Umami is better than Koetsu, AirTight and Lyrc Atlas .................these cartridge, as you know , are in 10.000 €
He also say " he had to buy it " Not he has for the next future, as your reference cartridge.

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Jose Francisco Gutierrez-san at “Lyric Audio Elite”, HANA / Spanish distributor, has forwarded us following URL.
https://www.youtube.com/watch?v=g8gcEb_FdhI