Letter O — Brands

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oBravo is Taiwanese manufacturer of high-end headphones and in-ear monitors, building a distinctive reputation for hybrid driver technology combining conventional balanced-armature or dynamic drivers with uncommon AMT (Air Motion Transformer) ribbon ...

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Ocean Way Audio is an American manufacturer of professional and high-end studio monitors, founded by celebrated recording engineer Allen Sides, building a reputation for reference-grade monitoring informed by decades of experience running some of the...

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Octave Audio is a German manufacturer of high-end tube and hybrid electronics, building a substantial international reputation for well-regarded vacuum-tube amplification combining considered circuit design with robust, professional-grade constructio...

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Range & what it's known for Odeon Audio is a German maker of horn loudspeakers, known for high-efficiency designs built for low-power tube amplification. The lineup in this catalog Floorstanding loudspeakers including the Nova S, Nova 2022, Helix,...

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Oehlbach is a German manufacturer of cables and audio accessories, building a substantial reputation within the German and broader European market for offering well-specified interconnects, speaker cables and accessories across an accessible-to-mid-t...

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Range & what it's known for Oephi builds loudspeakers in both stand-mount and floorstanding versions of the same design line. The lineup in this catalog The LOUNGE 2 stand-mount, reaching 45Hz to 27kHz, and the LOUNGE 2.5 floorstander, which exten...

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Range & what it's known for Ollo Audio is a Slovenian headphone maker known for studio headphones designed for mixing and tracking. The lineup in this catalog Headphones. The OLLO R1 is a closed-back over-ear model suited to recording, where isola...

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Range & what it's known for Omega Audio is listed in this catalog as a loudspeaker maker, with no individual models documented on this page yet. The lineup in this catalog Loudspeakers. Current range and pricing are best confirmed with the company...

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Range & what it's known for Oneiros builds a single flagship floorstanding loudspeaker whose design draws on the engineering principles of Formula 1 and supercars. The lineup in this catalog Floorstanding loudspeakers. The ONEIROS covers 20Hz to 3...

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Range & what it's known for OneOdio makes affordable consumer headphones in over-ear and true wireless formats. The lineup in this catalog Headphones. The Focus A6 is a closed wireless over-ear model and the Focus A1 Pro a true wireless in-ear des...

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OnePlus is a Chinese multinational technology company primarily known for smartphones, with a smaller audio-adjacent product line spanning true-wireless earbuds and headphones complementary to its broader smartphone ecosystem. Range & what it's know...

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Range & what it's known for Onix builds a range of digital sources and portable devices, from CD transports to DACs and a portable player. The lineup in this catalog The Zenith XST20 CD/SACD transport with FPGA engine, the Beta XI2 DAC with dual C...

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Onkyo is a Japanese manufacturer of audio and video electronics with roots stretching back to 1946, building nearly eight decades of reputation in AV receivers, hi-fi separates and speaker systems, having passed through significant corporate restruct...

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Range & what it's known for Onyx appears in this catalog with a digital range covering transports, streamers and DACs based on several major converter chip families. The lineup in this catalog The Zenith XMT20 CD transport, the Miracle streamer wi...

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Opera Loudspeakers is an Italian manufacturer of high-end acoustic systems, building a reputation within Italy's respected loudspeaker tradition for well-regarded standmount and floorstanding designs combining considered driver engineering with disti...

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Opera Loudspeakers is an Italian manufacturer of high-end acoustic systems, with this catalog entry representing the same underlying company and refined Italian design heritage documented under the related Opera brand page elsewhere in this system. ...

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Range & what it's known for Operly is represented in this catalog by a floorstanding loudspeaker. The lineup in this catalog Floorstanding loudspeakers. The Intelligence III covers 41.5Hz to 17.5kHz. Who it's for Buyers looking for a floorstande...

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Ophidian Speakers is a British loudspeaker manufacturer building a reputation for well-regarded full-size floorstanding designs finished in real wood veneer, aimed specifically at domestic listening environments with a considered, understated aesthet...

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Oppo is a Chinese consumer electronics manufacturer, historically renowned within the high-end audio community for its celebrated UDP-series universal disc players and HA-series headphone amplifiers before the company discontinued its dedicated hi-fi...

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Oracle Audio Technologies is a Canadian manufacturer of high-end turntables, building a substantial reputation for distinctive, visually striking suspended-subchassis turntable designs with roots stretching back to 1979. Range & what it's known for ...

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Orange Amplifiers is a British manufacturer of guitar amplifiers with roots stretching back to 1968, one of the most historically significant and visually recognisable names in guitar-amplifier history, with a smaller consumer audio product presence ...

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Range & what it's known for Orchard Audio is an American maker of compact, high-power amplifiers built with GaN (gallium nitride) transistor output stages. The lineup in this catalog The Starkrimson 25 Mono Premium delivering 150W into 8 ohms, the...

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Range & what it's known for Orpheus Lab is a Swiss manufacturer of high-end electronics, covering SACD playback and amplification up to very high power. The lineup in this catalog The A Three S200 stereo power amplifier, the A Four I200 integrated...

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Ortofon is a Danish manufacturer of phono cartridges and styli with roots stretching back to 1918, building more than a century of reputation as one of the most internationally recognised and comprehensive cartridge specialists in the entire hi-fi in...

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OSD Audio is an American manufacturer of accessible-to-mid-tier home audio equipment, including in-ceiling speakers, outdoor speakers and amplifiers, building a substantial direct-to-consumer following within the custom-installation and multiroom aud...

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Oswalds Mill Audio (OMA) is an American manufacturer of high-end horn loudspeakers, building a distinctive reputation for large-format, exposed-horn designs constructed from natural materials including wood and concrete, positioning the brand as much...

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Range & what it's known for Otta builds moving-coil cartridges with natural-material bodies. The lineup in this catalog Phono cartridges. The Mandolin uses a red sandalwood body, a ruby cantilever, an elliptical diamond stylus and pure iron core c...

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Outlaw Audio is American manufacturer of accessible-to-mid-tier AV receivers, amplifiers and subwoofers, building a substantial direct-to-consumer following by offering capable home-theatre electronics at prices considerably below many established co...

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Range & what it's known for OXS Audio is represented in this catalog by a closed over-ear headphone. The lineup in this catalog Headphones. The Storm A2 is a closed-back over-ear model. Who it's for Listeners who want an isolating over-ear headp...