Euphona started with a frustration familiar to anyone who has mixed a record: every tool sees a file, none of them see the song. A mastering service gets a stereo bounce and applies its chain. A denoiser hunts noise. Neither knows the chorus from the verse. So we built one engine that analyzes a track properly, once (dynamics, tonality, arrangement, stems), and every tool works from that shared understanding. Six tools run on that engine today: AI Mastering, Stem Separation, Audio Restoration, AI Vocal Tuning, AI Mixing and Spatial Audio. Because they all start from the same analysis, you can move from one to the next without each tool guessing at your track again. We also hold ourselves to a rule that is rare in this market: no claim we can't demonstrate. No unmeasured numbers, no logo without an agreement behind it. The Studio gives you a level-matched A/B of every result, so you can hear the difference for yourself. Or hear that there isn't one. Trying it is free and doesn't ask for a card. And if you'd rather build with the engine than click on it, there's an API: async jobs, typed SDKs, signed delivery. SOGV2 Limited · Hong Kong euphonaai.com