Tetrad is a synthesizer title in the multi-oscillator analog-style register, and its name describes the architecture: four oscillators. Instruments built around four oscillators exist for a practical reason — layering two detuned oscillators per voice produces a thick single tone, while four oscillators allow two distinct layers, or one layer of four detuned voices for extreme thickness, which is the configuration that produces the supersaw and stacked-lead sounds central to trance, synthwave, and modern electronic production. Similar architecture appears across the documented reference instruments: Spire features 4 completely identical oscillators with 9 unison voices on each, and Codex is described as a cutting-edge polyphonic wavetable synthesizer. The feature set in this class typically includes four oscillators with selectable waveforms and modes, a resonant filter section with multiple types, multiple envelopes and LFOs, a modulation matrix routing any source to any destination, an arpeggiator or step sequencer, and an effects section covering chorus, delay, and reverb, along with assigned macros for performance. It suits trance, synthwave, electronic, and cinematic production. It runs on macOS and Windows in VST, VST3, AU, AAX, and standalone formats. Confirm the developer and specific architecture before publishing — "Tetrad" does not resolve to a single verified product in the current catalogues of the major synthesizer developers, and multi-oscillator synthesizers exist under similar names from several publishers, including Sugar Bytes' Cyclop and Factory and other four-oscillator designs. #Tetrad #Synthesizer #Synth #AnalogSynth #PolySynth #Oscillators #Unison #ModulationMatrix #Arpeggiator #Trance #Synthwave #ElectronicMusic #Cinematic #SoundDesign #MusicProduction #VST #VST3 #AU #AAX #Standalone #FLStudio #AbletonLive #LogicPro #Cubase