Fire-Eye Development, Inc. is a Texas-based maker of analog signal-conditioning pedals for guitar, bass, and acoustic instruments. The company builds a small, focused line of preamps, buffers, and direct-style utility boxes by hand, emphasizing high input impedance and transparent gain staging for instruments with piezo, magnetic, or electret pickups.

The lineup centers on the Red-Eye instrument preamplifier and its dual-input sibling the Red-Eye Twin, which are aimed at players who need to plug two instruments — or an instrument with dual pickup systems — into a single clean front end. Alongside these sit the Bright-Eye clean boost and buffer, a pedalboard-format version of the Red-Eye's signal path that uses an optical (light beam and photocell) switch to avoid clicks and pops, and the Dee-Eye direct box. All units are designed around 9V/18V Boss-style power and are marketed as 100% analog.

Fire-Eye has a niche reputation among acoustic guitarists, upright and electric bassists, and other players using piezo or hybrid pickup systems, where the company's high-impedance input and shaped/flat tone options are valued for keeping pickup signals clean before they hit amps, DIs, or downstream effects.

Fire-Eye has 2 products cataloged on Equipboard, including Preamps.