Looks like usher has upgraded the BE10 and BE20 with diamond coated mid range drivers to match the tweeter.
https://usheraudio.com.tw/portfolio-item/td-20/
https://usheraudio.com.tw/portfolio-item/td-20/
The TD-10 is $22,000 MSRP. I'd guess the TD-20 is $28 - $30K MSRP.Any word yet on the msrp?
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