Dan D'Agostino - Momentum M400 MXV - Monoaural Amplifier

The Dan D'Agostino Momentum M400 MXV Monaural Amplifier represents the latest evolution of the acclaimed Momentum platform, incorporating extensive circuit and power supply advancements derived from the flagship Relentless Series. Designed for uncompromising reference-level systems, the M400 MXV delivers exceptional authority, transparency, and dynamic precision from an elegantly compact monoblock chassis.

Central to the design is a newly engineered 2,200VA ultra-quiet linear transformer paired with a nearly 100,000μF capacitor bank, providing dramatically increased current capability and improved transient response. Redesigned driver and output stages utilize high-speed 69MHz transistors and fully complementary balanced circuitry to expand bandwidth, reduce distortion, and enhance overall musical realism across the frequency spectrum.

The Momentum M400 MXV also incorporates Dan D'Agostino’s distinctive copper venturi-style heatsink system for exceptional thermal efficiency and increased Class A operation. Finished with the company’s signature Swiss watch-inspired analog power meter and precision-machined aluminum/copper chassis construction, the M400 MXV delivers state-of-the-art monaural amplification with unmistakable industrial design.

Available in Silver or Black finishes

FEATURES

• Fully balanced monaural power amplifier design
• MXV-generation Momentum circuitry
• 400W continuous output into 8 ohms
• 800W continuous output into 4 ohms
• 1600W continuous output into 2 ohms
• 2,200VA ultra-quiet linear transformer
• Nearly 100,000μF capacitor bank
• Fully complementary direct-coupled circuitry
• 69MHz high-speed output transistors
• 26 matched output transistors
• Enhanced Class A operating range
• Copper venturi-style heatsink system
• Single balanced XLR input
• Custom speaker binding posts
• Swiss watch-inspired analog power meter
• Precision-machined aluminum and copper chassis construction
• Upgradeable from previous Momentum monoblock amplifiers
• Hand-built and individually tested in the USA

SPECIFICATIONS

Type: Monaural Power Amplifier
Amplifier Class: Class AB
Output Power: 400W @ 8Ω / 800W @ 4Ω / 1600W @ 2Ω
Frequency Response: 1Hz – 200kHz (-1dB) / 20Hz – 20kHz ±0.1dB
Signal-to-Noise Ratio: >85dB A-weighted / >115dB unweighted
Gain: 27dB
Total Harmonic Distortion: 0.09% @ 1kHz, 400W @ 8Ω
Input Impedance: 100kΩ
Output Voltage: 150V peak-to-peak / 75V RMS
Output Current: 40A peak
Output Impedance: <0.11Ω, 20Hz – 20kHz
Power Consumption: Standby 3.8W / Idle 105W / Maximum 2700W
Inputs: 1 x Balanced XLR
Outputs: 1 Pair Speaker Binding Posts
Dimensions (W × H × D): 12.5 × 5.25 × 21.5 in. (31.6 × 13.3 × 54.6 cm)
Weight: 95 lbs (43 kg)
Finishes: Silver or Black