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The Dan D'Agostino Progression M550 Monoblock Amplifier is a second-generation high-performance amplifier known for its remarkable power output and exquisite musical finesse. It delivers 550 watts into 8 ohms, 1,100 watts into 4 ohms, and 2,200 watts into 2 ohms. The amplifier features a new heat sink design milled from a single 48.5-pound aluminum billet slab, improving cooling efficiency and reliability. It employs the Super Rail topology, which boosts voltage in the input stage for exceptional headroom and nearly ideal output stage operation. The amplifier uses 48 power transistors, a 2,000 VA power supply transformer, and nearly 100,000 microfarads of power supply storage capacitance. Major revisions to the input topology improve distortion, signal-to-noise ratio, channel separation, and bandwidth. New transistors handle six times the power of previous components, and DC coupling circuitry enhances low-frequency performance and bandwidth. The Class A operating range is increased to 70 watts, improving instrumental timbre and tonal reproduction. The audio path is discrete, balanced, and direct coupled, with advanced protection techniques. The iconic 180° meter needle is driven by a high-speed ballistic circuit for responsiveness and covers the amplifier's entire output range. This amplifier delivers intimate musical details, three-dimensional sound staging, and startling dynamics.
Amplification power output and characteristics
Analog signal output specifications
Input and output connections
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The STRUMENTO n° 8's power @ 8ω is 500W against the Progression M550's 550W, its power @ 4ω 1.0kW against 1.1kW, its signal-to-noise 110 dB against 105 dB, and its thd 0.050% against 0.015%.
The Grandioso M1X's power @ 8ω is 300W against the Progression M550's 550W, its power @ 4ω 600W against 1.1kW, its signal-to-noise 119 dB against 105 dB, and its thd 0.006% against 0.015%.
The Telos 2500's power @ 8ω is 400W against the Progression M550's 550W, its signal-to-noise 130 dB against 105 dB, its thd 0.010% against 0.015%, and its output impedance 10Ω against 0.1Ω.
The Hercules II's power @ 4ω is 750W against the Progression M550's 1.1kW, its thd 0.050% against 0.015%, and its output impedance 0.05Ω against 0.1Ω. Both share power @ 8ω (550W).
McIntosh MC301
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