Dan D'Agostino Momentum M400 MxV Monoblock Power Amplifier Pair with Original Crates

We are very excited to present a rare opportunity to acquire a pair of D'Agostino Momentum M400 MxV Monoblock Amplifiers in excellent, lightly used condition — complete with their original shipping crates, and rated 9/10 on the Audiogon scale.

The Momentum M400 MxV represents the pinnacle of Dan D'Agostino's monoblock design lineage — a statement amplifier in every sense of the word. Each chassis delivers 800 watts into 8 ohms, doubling down into lower impedances with the effortless authority that only a truly overbuilt, fully regulated power supply can sustain. The topology is fully balanced and fully discrete throughout, operating in pure Class A and governed by zero global feedback — a philosophy that places the burden of performance entirely on the quality of the circuit design itself. The sonic result is extraordinary: a presentation of music that is simultaneously commanding and delicate, with a pitch-black noise floor, titanically controlled bass, and a midrange of exceptional purity.

These units have spent the majority of their working lives as the driving force behind a world-class reference system anchored by the Wilson Audio Chronosonic XVX loudspeakers with matching subwoofers — one of the most demanding and revealing speaker loads available — wired throughout with Transparent Reference and Opus cabling. No amplifier in this system was asked to work hard. Both units are in the same superb cosmetic and sonic condition you would expect from a climate-controlled, smoke-free and pet-free environment.

Original crates are included, making shipping and future transport straightforward — a detail that matters enormously with amplifiers of this size and value. For the buyer who wants the best that D'Agostino builds in a monoblock configuration, and who wants it with meaningful provenance and complete packaging, this pair is exceptionally hard to improve upon.

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