TerraTec Electronic GmbH is a German consumer electronics and audio hardware manufacturer founded in 1994 by Walter Grieger and Heiko Meertz, headquartered in Nettetal in the Viersen district of North Rhine-Westphalia. The company built its reputation as the largest German producer of PC sound cards, with long-running internal card lines including the EWS, EWX, DMX, Aureon, and Solo series.

For musicians and producers, TerraTec is best known for its Producer sub-brand, which expanded the catalog beyond consumer sound cards into project-studio interfaces. The Phase series — including the Phase 88 PCI/rack interface, the Phase 26 and Phase 28 USB units, and the Phase 24 FW and Phase X24 FireWire interfaces — offered multi-channel 24-bit/96kHz I/O aimed at home recordists and mobile laptop-based setups. TerraTec also developed the Axon line of pitch-to-MIDI guitar converters and at various points distributed third-party music software such as Steinberg's Cubase alongside its own hardware.

Outside of pro audio, the broader catalog spans DVB-T tuners and capture devices (TerraTV, Grabster), the TerraCAM webcam line, USB speakers like the Aureon 5.1, vinyl-digitization preamps, and consumer accessories including powerbanks and chargers. The company previously produced graphics cards before exiting that segment to concentrate on audio, video capture, and peripherals.

Terratec has 7 products cataloged on Equipboard, including Audio Interfaces, MIDI Keyboard Controllers, and Sound Modules. Their gear is featured by 2 artists, with the strongest followings in Electronic and Rock. Notable users include Robert Fripp and Noisia.