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Ortofon O-One is which Ultrasone S-Logic?

post #1 of 4
Thread Starter 
Ortofon O-One looks so pretty, and it uses S-Logic. I wonder which Ultrasone is it ? I emailed them, but my email was returned.
O-One
post #2 of 4
Definitely look like PRO 550 to me.
post #3 of 4

Everything is the same as the PRO 550, except for the drivers which Ortofon picked for themselves.

post #4 of 4

S-Logic v1

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