eSynic is a consumer electronics brand founded in 2012 that produces a broad catalog of connectivity and accessory products, including HDMI switches and splitters, audio and video signal converters, data cables, and adapters. The brand entered the UK market in 2013 and has since expanded across Europe, selling primarily through its own web store and third-party marketplaces such as Amazon and AliExpress.

Within the audio portion of its lineup, eSynic offers portable headphone amplifiers and digital-to-analog converters aimed at home listeners and budget-conscious users. Products include the eSynic Professional HiFi Headphone Amplifier, a Bluetooth 5.0 HiFi Headphone Amplifier supporting 16–300Ω headphones, and a range of Toslink/coaxial-to-RCA DAC boxes used to connect televisions, game consoles, and Blu-ray players to analog stereo systems.

The company is not a dedicated musical instrument manufacturer; its audio gear sits in the general-purpose consumer electronics category rather than the pro-audio or instrument market. eSynic's reputation is built around inexpensive, utilitarian accessories rather than signature instruments or studio tools.

eSynic has 1 product cataloged on Equipboard, including A-D & D-A Converters.