ISK is a Chinese audio manufacturer based in Ningbo, operated by Ningbo Yinzhou Shengke Electronics. The company produces microphones, headphones, microphone accessories, and professional stands, and also manufactures gear on an OEM basis for other well-known audio brands.

ISK is best known for budget-oriented studio microphones that aim to deliver professional features at accessible price points. The lineup spans large-diaphragm condensers, tube condensers, dynamic mics, and ribbon mics, with models such as the BM-800, BM-900, BM-5000, TRM-9 tube condenser, 2B Beauty, and Starlight. In North America the brand is distributed directly by iSK Pro Audio, which sells the range online.

ISK has 7 products cataloged on Equipboard, including Headphones & In-Ear Monitors, Dynamic Microphones, and Condenser Microphones.