iFi audio is a British hi-fi electronics company based in Southport, UK. Launched in 2012 as a sister brand to high-end audio manufacturer Abbingdon Music Research (AMR), iFi was created to bring audiophile-grade engineering to smaller, more affordable, and often portable form factors. The company designs and manufactures DACs, headphone amplifiers, streamers, phono stages, and power-conditioning accessories, with additional offices in the United States, the Netherlands, and Asia.

The product catalog is organized around several long-running lines. The portable range includes the pocket-sized hip-dac, the GO blu and GO link dongle DACs, and the high-power iDSD Diablo and iDSD Valkyrie DAC/amps. The ZEN series covers desktop components at lower price points, including the ZEN DAC, ZEN CAN headphone amplifier, ZEN Phono preamp, ZEN Blue Bluetooth receiver, and ZEN Stream network streamer. Higher up the range, the NEO iDSD and iDSD Phantom target dedicated desktop listening.

iFi is known within the hi-fi and headphone communities for supporting high-resolution formats (DSD, MQA, and PCM at high sample rates), for its use of Burr-Brown DAC chips across much of the lineup, and for features like its XBass and XSpace analog processing, iEMatch output attenuation for sensitive in-ear monitors, and ActiveNoiseCancellation-branded power supplies. Its products are typically aimed at headphone listeners, desktop audio enthusiasts, and portable users looking to drive demanding headphones from a phone or laptop.

iFi audio has 19 products cataloged on Equipboard, including Home Headphone Amps & DACs, Audio Interfaces, and Power Conditioners.