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Moon 390 (£3400) and 330A(£2100) Streamer/Preamplifier + HDMI + PHONO and Power amplifier if both sold separately
# Simaudio Moon 390 + 330A — Buyer Notes
This is a seller's market for high-end integrated amplification right now, and this asking price reflects it. At £5,500 for the pairing, you're looking at roughly 2.5× the median comparable used asking price of £2,231 we've tracked recently. The 390 preamp and 330A power amp are genuinely capable separates with solid build quality, but this premium hinges entirely on condition claims and full functionality. Unless the "excellent" rating includes original packaging, documentation, and demonstrable low hours, the asking price sits well into ambitious territory—closer to what you'd expect for a nearly new or showroom demo unit.
Before committing, verify the amplifiers power on cleanly with no channel imbalance, hum, or transformer noise. Request a serial number check with Moon/Simaudio to confirm service history and warranty status; these units are now several years old, and any prior repairs should be disclosed. Confirm all original remote controls, balanced XLR cables, and documentation are included. Ask the seller for hours of operation and whether either unit has had the power supply recapped—a worthwhile maintenance point on older Moon gear if it hasn't been done.
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 Israeli émigré and qualified audio engineer, founded Sima Electronique in Canada with a deliberate mission to craft superior-sounding products at accessible prices. Initially targeting professionals, the brand—later renamed Simaudio—quickly captivated audiophiles for its sonic excellence and value. Sima retired in 1994, selling to Jean Poulin, whose leadership propelled the evolution into the premium MOON series, building on successes like the Celeste line and in-house innovations from their Quebec facilities.
The company specializes in high-performance electronics, excelling in amplifiers, integrated systems, preamplifiers, power amplifiers, and digital converters such as DACs. All products undergo meticulous hand-assembly, in-house chassis machining, and rigorous burn-in testing in Montreal-area factories, emphasizing precision engineering over mass production. While not venturing into speakers, turntables, headphones, or cables, MOON's lineup—from reference-grade flagships to the more approachable "1" series—delivers trickle-down technology for broad appeal.
Positioned firmly in the high-end market, Moon by Simaudio commands respect as a boutique Canadian powerhouse, blending audiophile purity with user-friendly design. Privately held and exported to 45 countries, it rejects esoteric tweaks in favor of natural, detailed sound that invites music lovers to truly immerse themselves, sustaining vibrant success without compromising its heritage of engineering excellence.
See all Moon by Simaudio listings on RADAR.
