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