Nytech Audio is a British audio amplifier and phono amplifier maker based in Cardiff. Alongside hand-built analogue hi-fi equipment, they offer servicing, repairs and upgrades for vintage Nytech amplifiers from the 1970s and 1980s, helping bring older units up to modern expectations. Their work focuses on analogue hi-fi electronics, including amplifier and phono-stage products built under the Nytech and later Ion Systems branding.