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UDO is a modern British synthesiser manufacturer based in Bristol, focused on building high-end, performance-led instruments with a strong character of their own. The company was founded by George Hearn, formerly of Modal Electronics, and launched with a clear aim: create digital synthesisers that feel as immediate and expressive as classic analogue gear.
UDO are best known for the Super series, which use their proprietary binaural digital synthesis engine. This approach combines FPGA-based digital oscillators with analogue-style signal paths, delivering wide, animated stereo sound while keeping hands-on control at the centre of the experience. The instruments are designed to be played, not programmed endlessly, which has made them popular with touring musicians and sound designers alike.
For SynthForSale, UDO sits in the modern premium synthesiser category — forward-thinking instruments that blend cutting-edge digital technology with a very physical, musician-first design philosophy. They appeal to players who want something distinctive, expressive, and built for long-term creative use rather than mass-market trends.
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Keyboard refers to electronic keyboards used for playing, composing, and performing music, ranging from simple digital keyboards to advanced synthesizer-based instruments. On SynthForSale, keyboards include instruments designed for studio production, live performance, and home use, often featuring velocity-sensitive keys, built-in sounds, MIDI connectivity, and integration with computers and other hardware. They are commonly used across electronic, pop, ambient, film, and experimental music, and can function as standalone instruments or as controllers for software and modular setups.
A synthesizer is an electronic instrument that generates and shapes sound using oscillators, filters, envelopes, and modulation sources. It allows sounds to be created from scratch, altered in real time, and controlled through keys, sequencers, or external controllers. Synthesizers are used to produce everything from basses and leads to pads, textures, and experimental sound design in both studio production and live performance.
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