Dan D'Agostino Momentum S250 MxV Stereo Power Amplifier with Original Case

We are thrilled to present a pre-owned D'Agostino Momentum S250 MxV Stereo Power Amplifier in excellent, lightly used condition, complete with its original case — a combination that is increasingly difficult to find on the secondary market. The Momentum S250 MxV is the amplifier that established D'Agostino Master Audio Systems as a force unto itself. Operating in pure Class A up to 200 peak watts, it delivers 200 watts into 8 ohms and 400 watts into 4 ohms — a combination of purity and authority that few amplifiers at any price can match. The topology is fully balanced and fully discrete throughout, with zero global feedback, a hallmark of Dan D'Agostino's design philosophy carried forward from his legendary work at Krell. The result is an amplifier of exceptional naturalness: silky, grain-free, and possessed of the kind of iron-fisted bass control that only a truly confident power supply can produce. This unit comes directly from a world-class reference system built around the Wilson Audio Chronosonic XVX loudspeakers with matching subwoofers, optimized throughout with Transparent Reference and Opus cabling. It has been operated in a smoke-free, pet-free, climate-controlled environment and has seen only light use. The sonic and cosmetic condition are commensurate with that provenance. For the serious buyer assembling or refining a statement system, this represents a rare opportunity to acquire one of the most acclaimed stereo amplifiers ever made — with original case — at a significant saving over its retail price. Core Technical Specifications: Parameter Specification Output power 200 W @ 8 Ω · 400 W @ 4 Ω · 800 W @ 2 Ω Amplifier class Pure Class A (to 200 peak watts) Topology Fully balanced, fully discrete, zero global feedback Gain 26 dB Frequency response 1.5 Hz – 100 kHz Damping factor >1,000 THD <0.1% (full power, 20 Hz – 20 kHz) Inputs Balanced XLR · Single-ended RCA Input impedance 100 kΩ (balanced) · 50 kΩ (unbalanced) Power consumption ~700 W idle Dimensions (W × H × D) 19" × 7.5" × 21.25" (483 × 191 × 540 mm) Weight 88 lb / 40 kg Retail price (new) ~$45,000 USD Details & Testing Notes: Cosmetic Condition: 9/10: Excellent - Light use, no visible imperfections. Functional Notes: Functions as intended and sounds fantastic. Voltage: 120V 50/60Hz Serial #: 0600 Original Box: Yes Manual: No Remote: No Power Cord: Yes Additional Items: Comes with Transparent Hardwired power cable. Shipping Method: Freight (Domestic / International) Shipping Weight: 150lbs 32x24x27