A chip engineer’s second career in Yokohama.

Aurorasound is the company of Shinobu Karaki (唐木志延夫), and it is younger than most Japanese hi-fi names. Its own company profile says Karaki worked at Texas Instruments Japan from 1980 to 2009, in its consumer chip, digital audio and internet audio businesses, in roles that ranged from marketing and chip development to application support and sales. Hi-Fi News has reported that he took early retirement to follow his own interest in audio; dealers and reviewers add that he is a musician who plays and teaches guitar.

The profile gives two starting dates. The business began as Aurorasound on 1 April 2010, and the present company, Aurorasound Inc. (オーロラサウンド株式会社), was registered on 15 October 2012. It is based in Asahi Ward, Yokohama, in Kanagawa Prefecture, where it lists both a head office and a separate workshop and listening room. Its stated business is developing, making and selling audio equipment, including amplifiers and loudspeakers, and importing and selling electronic components. It lists memberships of the Japan Audio Association, the Audio Engineering Society and the Yokohama Chamber of Commerce.

Reviewers abroad describe the same set-up. The American site Twittering Machines, reviewing the company’s HEADA headphone amplifier in January 2019, said Aurorasound was founded in Yokohama in 2010, with Karaki as president overseeing all technical design, and named High-End Electronics as its American distributor.

VIDA, Lundahl and the record groove.

The product that made the name is the VIDA phono stage — “Vinyl Disk Amplifier,” according to Hi-Fi News. It uses LCR equalisation, in which inductors, capacitors and resistors shape the RIAA curve, with inductors from the Swedish transformer maker Lundahl. When the VIDA Mk II arrived on 10 October 2021, at ¥372,000 before tax, Stereo Sound wrote that the original had come out about ten years earlier and had become popular in Japan and abroad, naming the United States, Britain, France, Italy and Hong Kong. The Mk II kept the exterior, used custom Lundahl chokes and, the company said, halved distortion.

The range grew around the record player. The current list includes the VIDA Supreme and VIDA Mk II, both LCR designs; the VIDA prima, which uses NF-CR equalisation; and the EQ100, which Stereo Sound described in March 2022 as a solid-state mono phono equaliser for 78rpm records and mono LPs, with switchable turnover and roll-off settings covering what it called 100 equalisation curves. Accessories include a moving-magnet expander, an inverse-RIAA converter and a moving-coil step-up transformer.

Amplifiers followed the phono stages: the PREDA line preamplifier, which is solid-state; the PADA-300B, a push-pull mono power amplifier built on the 300B triode; the HFSA-01 hybrid integrated amplifier, announced in March 2023 according to Phile-web; and the HEADA headphone amplifier, which Twittering Machines priced at US$2,990 in 2019.

Karaki’s chip background shows in the details. For the HEADA, he told Twittering Machines, he used discrete NEC and Toshiba small-signal transistors made between 1970 and 1980, and said the company keeps a stock of these Japanese parts. Stereophile’s Ken Micallef, reviewing the HFSA-01 in March 2025, described a hybrid in which Texas Instruments op-amps drive four EL84 valves for 14 watts a channel, with Japanese transformers.

The company’s English page lists awards, including a Stereo Sound Grand Prix for the PADA-300B 300B power amplifier in 2019 and for the HFSA-02 in 2025, and a Diapason d’Or for the VIDA prima in 2019; we give these as its claims.

Japanese boutique hi-fi.

Japan supports many small hi-fi makers, and several in this guide were started by people from the big names. Air Tight’s founder, Atsushi Miura, had been at Lux, now Luxman, before he set up A&M in 1986, according to a 2017 Phile Web interview. Leben’s Taku Hyodo also worked for Luxman, his company says, and Soulnote’s parent, CSR, was founded in 2004 by former members of Marantz Japan, according to Soulnote.

Others came from outside hi-fi. Aurorasound’s Shinobu Karaki spent almost 30 years at Texas Instruments Japan, his company says; Phasemation belongs to Kyodo Denshi Engineering, mainly an automotive-electronics firm; Kiso Acoustic was founded by a collector, Toru Hara.

Valve amplifiers remain central to this world: Zanden says it mainly makes products that use vacuum tubes, Leben calls itself a maker of tube amplification, and Air Tight says it holds to valve amplifiers. The Tokyo publisher Stereo Sound, whose founder held that no measuring instrument surpasses human sensibility, Japanese Wikipedia says, ran a quarterly devoted to valve equipment until October 2025. Its Grand Prix counts for small makers: Kiso Acoustic’s HB-1 won in 2009, and Phasemation says it was honoured in 2025.

The seven are not gathered in one district. Air Tight is in Takatsuki and Zanden in Kishiwada, both in Osaka Prefecture, and Leben in neighbouring Amagasaki; Phasemation and Aurorasound are in Yokohama, Soulnote elsewhere in Kanagawa, and Kiso Acoustic in Nakatsugawa, Gifu, according to their own websites and listings.

This guide sets out what can be checked about each brand — who founded it, who owns it, and what it says about where its products are made — and marks clearly what rests only on the company’s own word.

Solid maple and aluminium.

Aurorasound remains Karaki’s own company. Its profile names him as representative, and Stereo Sound introduced him in 2022 as president and chief executive and as the designer of the EQ100; we found no record of outside owners. In the sources we checked the company does not make a general “made in Japan” statement. What is documented is that it designs in Yokohama, where it has its workshop, and that it mixes Japanese and imported parts.

The newest amplifier shows both. In September 2025 Phile-web reported the HFSA-02, an all-valve integrated amplifier on sale from 1 October 2025 at ¥946,000 including tax. It uses a 12AX7 input stage, a 12AU7 phase splitter and EL34 output valves with Lundahl output transformers for 31 watts a channel, while its power and choke transformers are Japanese custom models made to Aurorasound’s order. Like Leben, it uses self-bias, so other brands’ EL34s can be fitted.

Its look is documented too. The HFSA-02’s frame is 22mm solid maple with a 4mm solid aluminium top plate, Phile-web reported, and Twittering Machines described the earlier HEADA as brushed aluminium in a furniture-quality wooden case — “understated and retro.” We found no explanation of the Aurorasound name in the sources we checked, so we do not offer one.

For a design guide, Aurorasound shows how an engineer’s brand can build a look from honest materials — pale wood, bare aluminium and plain type. Compare Phasemation, another Japanese specialist in phono equipment, and Leben, a valve-amplifier maker that also dresses its work in wood. For this guide we use a deep teal, maple and aluminium grey with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep Aurorasound’s identity on hand — save it to a board in the Made Good inspiration library.