Bellsing
Shenzhen, Guangdong, China · founded 2014
Subject of a landmark U.S. ITC trade-secret case: in 2021 the ITC found Bellsing and its founder misappropriated Knowles' balanced-armature trade secrets and issued a rare general exclusion order (Inv. 337-TA-1186) blocking U.S. import of the infringing BA devices and downstream products (hearing aids, wireless headsets). This is a key reason Bellsing drivers are ubiquitous in budget ChiFi IEMs but largely absent from US-market products.
Bellsing (Shenzhen Bellsing Acoustic Technology Co., Ltd.) is a Chinese manufacturer of balanced-armature (BA) receivers and related electro-acoustic components, positioned as a lower-cost B2B alternative to Knowles and Sonion. It supplies single-, dual-, quad-, and multi-driver BA receivers plus planar and hybrid drivers used widely in budget/ChiFi IEMs, hearing aids, and hearables. In 2021 the U.S. International Trade Commission found (Inv. No. 337-TA-1186) that Bellsing and founder Liang Li had misappropriated Knowles’ trade secrets, issuing a general exclusion order on October 4, 2021 barring importation of the infringing BA devices and downstream products into the U.S. The company operates from Shenzhen with production centers in Suzhou and Dongguan.
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At a glance
- Type
- Supplier
- Founder
- Liang "Ryan" Li
- Founded
- 2014
- Headquarters
- Shenzhen, Guangdong, China
- Price range
- Budget
- Makes / sells
- balanced armature receivers/drivers, single-driver BA receivers, dual/quad/multi-driver BA receivers, planar drivers, hybrid drivers, RIC (receiver-in-canal) hearing-aid modules
- Known for
- low-cost balanced-armature drivers, Knowles/Sonion-compatible BA model numbering (e.g. 30095, 30017), OEM/custom-tuned BA drivers for ChiFi IEM brands, hearing-aid and hearable acoustic components
- Website
- www.bellsing.com
Notable products
- WBFK-30095 single BA driver — High-frequency BA receiver; model number mirrors Knowles equivalent, widely used in budget ChiFi IEMs
- 30017 dual BA driver — Bright dual balanced-armature receiver used in multi-driver ChiFi IEMs
- Hornet series AMBA receiver — Bellsing's advanced/miniature balanced-armature line
Supplies
Notable brands that use their components:
Sources: Bellsing official site (Shenzhen Bellsing Acoustic Tec) · Businesswire — ITC Judge Rules in Favor of Knowles in Trade Secret Case Against Bellsing (names founder Liang 'Ryan' Li) · USITC — 337-TA-1186 General Exclusion Order (lists Bellsing respondent entities) · Federal Register — GEO issued in Certain Balanced Armature Devices (337-TA-1186) · CB Insights — Bellsing company profile (HQ address, Series B) · Head-Fi — BA source discussion (Knowles/Sonion/Bellsing; KZ/CCA use of Bellsing drivers)