Ghost Note Audio is a UK-based audio equipment manufacturer headquartered in West Sussex, England, operating as a trading name of Ghost Note Engineering Ltd. Founded in 2023 by Valdemar Erlingsson, the company designs and builds both hardware and software for musicians and audio professionals, with products made and shipped from the United Kingdom under the tagline "Eschew Tradition."

The brand is known for a line of solid-state preamplifier pedals inspired by high-gain amplifiers of the 1980s and 1990s, including the Omega Lead, which draws on the Sunn Beta Lead circuit. Alongside the preamps, Ghost Note Audio produces digital effects such as the 3 Bit Fuzz (a multi-band bitcrusher), the Amverb stereo reverb, and the Swirls pedal, which combines a tri-stereo chorus emulation, a micro pitch-shifter, and a VCA-style compressor. The catalog also includes the Conductor MIDI controller with three 100mm faders, plus plugins and impulse response collections like Forged In Code.

The company's design approach emphasizes engineering merit and measurable performance, summarized by the founder's principle that "if you can't measure it, it's not important." Ghost Note Audio positions itself around filling overlooked gaps in the gear market at accessible price points, and the brand has drawn coverage from outlets like Guitar.com and discussion on community forums such as theFretBoard and SevenString.org.

Ghost Note Audio has 12 products cataloged on Equipboard, including Guitar Preamp Pedals, Multi Effects Pedals, and Fuzz Effects Pedals.