A 1993 company with aviation-group roots.

Cayin’s products are made by Zhuhai Spark Electronic Equipment Co., Ltd. (珠海斯巴克电子设备有限公司), which its Chinese website says was set up in Zhuhai, the Guangdong city across the water from Macau, in August 1993. The Chinese company name, 斯巴克, is a phonetic rendering of “Spark,” and the brand itself is written 凯音 in Chinese. The company says it develops and produces audio equipment under its own brand and with its own intellectual property, sells in more than 50 countries and regions, and wants Cayin to become “a world-famous high-end audio brand.”

The company’s roots are in China’s state aviation industry. A Sina article of April 2026, drawing on company-registry data, says Spark was set up with investment from China National Aero-Technology Zhuhai Co., and that it is now owned in two equal halves by AVIC International Holding (Zhuhai) and a second AVIC-named company, 中航科创有限公司. A field-trip report published by Beijing Normal–Hong Kong Baptist University, describing a visit in December 2025, likewise says Cayin “belongs to” the Aviation Industry Corporation of China (AVIC), the state-owned aerospace group. An older address for the company, recorded by the collectors’ site Radiomuseum, was the CATIC Building on East Jiuzhou Avenue in Zhuhai — CATIC being the initials of the aviation group’s import-export arm.

The same registry-based article puts Spark’s registered capital at 26 million yuan and its insured workforce at 146 people in 2024. The company itself says it has a 12,000-square-metre research and production base and is recognised as a national high-tech enterprise; its contact page places that base at the Spark Industrial Park on Lianfa Road, in Zhuhai’s Jinwan district.

Valve amplifiers first.

Cayin made its name with valve (tube) amplifiers. Chinese brand profiles date the first valve product, a model called the 560, to 1994 and the start of overseas sales to 1997; we give those dates as reported, not independently checked. Radiomuseum lists an early Spark model, the A-88T integrated amplifier, switchable between ultralinear and triode operation — a feature that recurs across the range.

American reviewers took notice in the 2000s. In Stereophile in March 2008, Robert J. Reina reviewed the A-50T, a $1,295 integrated using two push-pull pairs of EL34 valves for 35 watts per channel in ultralinear mode or 16 in triode, with point-to-point wiring and transformers “specially manufactured for Cayin.” He wrote that he would not normally expect “an affordable, Chinese-made integrated powered by tubes to be the last word in rugged construction or sexy cosmetics,” and that the A-50T “proved me wrong in both regards.” The magazine named the maker as Zhuhai Spark Electronic Equipment, with VAS Industries of New Jersey as importer; Stereophile has also covered models including a 300B integrated and the SP-10A.

The current Chinese catalogue still leads with valves — the MT-45 MK3 and the KT170-powered U-99i Plus integrated amplifiers, and the HA-6A MK2 headphone amplifier — alongside CD players, streamers and loudspeakers. In 2013, the company says, Cayin moved into personal audio, launching digital audio players and desktop products; current players include the N6iii, sold with interchangeable audio motherboards. The German distributor’s website describes the C9 portable headphone amplifier, which lets the listener switch between a transistor output stage and one using Korg’s miniature Nutube valves.

The company’s own honours page lists, among mostly Chinese show awards, recognition in 2019 from the German magazine stereoplay for the N3Pro player and the HA-300 headphone amplifier.

Design and documentation.

The seven brands in this guide come from one corner of southern China: the Pearl River Delta in Guangdong, around Guangzhou, Shenzhen, Zhuhai and Dongguan. English Wikipedia notes that the delta’s industrial cities have been called the “Factory of the World” and describes the region as a major manufacturing base for electronics. Shenzhen became one of China’s first special economic zones in 1980; Zhuhai is another.

Much of that output carried other companies’ names. Darko.Audio reported in 2020 that the Dutch brand PrimaLuna’s products were built at Cayin’s factory, and the German magazine stereoplay wrote in 2021 that Cayin’s German distributor had created the Cayin brand in the late 1990s. The makers here now sell under their own names.

Valve amplifiers remain a speciality. Cayin and Line Magnetic, both Zhuhai companies, list them prominently in their ranges, and Shanling’s company history records a valve power amplifier in 2002.

Shanling, which began in Jieyang in eastern Guangdong, moved to Shenzhen in 1996; the city is also home to iBasso, which says it was founded there in 2006, and Questyle, founded in 2012. Cayin, founded in 1993, and Line Magnetic are in Zhuhai; Denafrips and Musician Audio are in Guangzhou, according to their own websites.

Much of the debate about them happens online — in reviews on Headfonics, Soundnews and Darko.Audio, and on the Audio Science Review forum, where a member posted measurements of Musician Audio’s first converter in 2020.

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.

One brand, two origin stories.

Who created the Cayin name depends on whom you ask. The Zhuhai company presents Cayin simply as its own brand. Its long-standing German distributor, Cayin Audio Distribution GmbH, tells a different story: an article from the German magazine stereoplay (issue 10/2021), reproduced on the distributor’s website, calls it the distribution company “that brought the Cayin brand into being in the late 1990s,” and says its owner, Thomas Deyerling, had earlier sold valve amplifiers from the Far East under the name Audio Arts. A German retailer says the Spark name could not be used in Germany for legal reasons. We cannot settle which side coined the word, so we give both accounts.

The web record supports a German start in the West. The address cayin.com has belonged to the German company since at least April 1999, according to the Internet Archive; a capture from May 2000 gives its address in Kelkheim, in the Taunus hills near Frankfurt, and invites visitors to the High End show at the Kempinski hotel in Neu-Isenburg that June. Today the company is registered at Schlüchtern, in Hesse, with its administration in Glashütten, and also sells the Zingali loudspeaker brand. The Chinese maker uses cayin.cn and en.cayin.cn — a trap for anyone who assumes the .com address is the factory.

On where the products are made, the sources agree: in China. The stereoplay article says the components are hand-built in “an experienced Chinese manufactory,” often with point-to-point wiring, to specifications the German company sets and checks in quality control; the Zhuhai company describes its own research and production base; and the university report describes students touring an automated production workshop, a research laboratory and a listening room there. That report also calls Cayin the world’s largest maker of hi-fi valve amplifiers — a claim we could not verify.

For a design guide, Cayin shows how a single product line can carry a Chinese maker’s name at home and a European distributor’s story abroad. Compare Shanling, another Guangdong maker that moved from home hi-fi into portable players, and Line Magnetic, a fellow Chinese valve-amplifier maker. For this guide we use valve amber, chassis black and brushed silver with a sans, an unofficial interpretation; no product or logo is reproduced.

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