Opera Loudspeakers - Did you know ? Opera Callas diva and grand callas speakers have a back radiation system with two additional rare tweeters. The result ? Sound stage expand in three dimensions | Facebook
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Opera Callas Diva - Standlautsprecher | Passive Standlautsprecher | Standlautsprecher | Lautsprecher & Kopfhörer | Justhifi
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