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The MOON ACE is a respected all-in-one: a compact streaming amp with a genuinely good phono stage, and at US$2,500 this listing looks fair to slightly strong, not a steal. New pricing for the ACE has been around US$2,950 on recent retail listings, while used examples I found cluster roughly from US$1,850 to US$2,576, putting this ask near the upper-middle of the used market rather than below it.
What makes it worth considering is the combination of MiND 2 streaming, solid Moon amp section, and the built-in phono input, so it can replace several boxes without feeling compromised. If the unit is clean, includes the original box/accessories, and the seller can confirm the MiND 2 / AirPlay 2 status, that supports the price; at this level, those details matter more than usual.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Moon by Simaudio traces its roots to 1980, when Victor Sima, an audio engineer who emigrated from Israel to Canada, founded Sima Electronique in Quebec with a deliberate mission to craft superior-sounding audio products at accessible prices. Initially targeting professionals, the brand quickly won over audiophiles for its value and sonic excellence. Sima retired in 1994, selling to Jean Poulin, whose leadership elevated the company; by the late 1990s, the premium MOON series emerged from the successful Celeste line, embodying innovation and engineering precision while remaining privately held for unwavering control.
The brand specializes in high-performance electronics, excelling in integrated and power amplifiers, preamplifiers, DACs, and streaming solutions that prioritize musicality and build quality. Hand-assembled in-house with custom chassis and rigorous burn-in testing, MOON products span reference-grade separates to all-in-one systems like the ACE, alongside multi-channel AV amplifiers. While not venturing into speakers, turntables, headphones, or cables, their focus on pure analog and digital playback delivers cosmic precision and futuristic design.
Positioned firmly in the high-end market, Moon by Simaudio commands respect among discerning buyers for its clear, natural sound that makes music visceral rather than tweaky. Exported to 45 countries with accolades from Stereophile and The Absolute Sound, it rejects mass-market compromises, offering approachable luxury that bridges specialist hi-fi with broader appeal—vibrantly successful today as a Canadian benchmark for uncompromising performance.
See all Moon by Simaudio listings on RADAR.
