Producenci audio na literę U (Audio links - manufacturers starting with letter U)
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| Marka Name | Internet Website | Kraj Country | Założono Established |
| Ultralink | www.ultralinkcables.com | Kanada - Canada | ---- |
| Ultrasound | www.ultrasound-hifi.com | Włochy - Italy | ---- |
| Unison Research | www.unisonresearch.com | Włochy - Italy | ---- |
| Unisound | www.unisound.net | USA | ---- |
| Usher Audio | www.usheraudio.com | Tajwan - Taiwan | ---- |
| Marka Name | Internet Website | Kraj Country | Założono Established |
