The Dan D'Agostino Progression M550 Monoblock Amplifier represents the second generation of the acclaimed Progression Series, elevating power, detail retrieval, and control to extraordinary new levels. Available through Trimira Audio, Brisbane’s premier destination for ultra-high-end audio, the M550 incorporates technology drawn directly from the flagship Relentless Series to command any loudspeaker with effortless authority.
Delivering an impressive 550 Watts into 8 Ohms, the Progression M550 doubles its output linearly to 1,100 Watts into 4 Ohms and 2,200 Watts into 2 Ohms. From delicate solo acoustic passages to explosive orchestral peaks, the M550 maintains flawless composure and three-dimensional soundstaging.
Key Features & Technological Innovations
-
Relentless-Derived Elliptical Heatsinks: Each heatsink is precision-milled from a single 48.5 lb (22 kg) aluminum billet slab. The highly efficient elliptical form dramatically increases surface area, allowing a higher operating bias while keeping temperatures stable under maximum load.
-
Extended 70-Watt Class A Operation: Upgraded output devices paired with efficient thermal dissipation allow an increased operating bias—extending pure Class A performance up to 70 Watts, resulting in natural instrumental timbres and silky tonal warmth.
-
Exclusive Super Rail Topology: Employs higher voltage supply rails in the sections prior to the output stage (acting like a turbocharger for audio signals) to allow maximum output swing, significantly lowering distortion and tightening speaker grip.
-
Upgraded 48-Transistor Output Stage: Features 48 ultra-fast output transistors—first introduced in the Relentless series—handling four times the power and offering tighter gain matching between complementary NPN/PNP pairs.
-
2,000 VA Transformer & Massive Storage: Driven by a heavy-duty 2,000 VA power supply transformer and nearly 100,000 µF of power-supply filter capacitance to supply instant current during rapid dynamic transients.
-
180-Degree Ballistic Power Meter: Incorporates an anodized aluminum faceplate featuring a classic watch-dial meter with an extended 180-degree needle arc, driven by a high-speed ballistic circuit for real-time responsiveness across the full output range.
Technical Specifications
| Feature / Metric |
Specification |
| Output Power |
550 W @ 8Ω / 1,100 W @ 4Ω / 2,200 W @ 2Ω |
| Frequency Response |
1 Hz – 80 kHz (-1 dB) / 20 Hz – 20 kHz (±0.01 dB) |
| Distortion (THD) |
0.015% @ 1 kHz @ 550 W into 8Ω |
| Signal-to-Noise Ratio |
>105 dB (unweighted) / >75 dB (A-weighted) |
| Class A Range |
Up to 70 Watts |
| Input Impedance |
100 kΩ |
| Output Impedance |
0.1 Ω |
| Inputs / Outputs |
1 Balanced XLR Input / 1 Pair Custom Heavy-Duty Binding Posts |
| Dimensions (W x H x D) |
17.875 x 9.0 x 23.0 in / 45.4 x 23.0 x 58.4 cm |
| Weight |
115 lbs / 52.2 kg per unit |
| Finishes Available |
Anodized Silver, Stealth Black, or Custom Finishes |
Experience Progression M550 at Trimira Audio
Connect with the audio specialists at Trimira Audio to discuss system matching, evaluate speaker compatibility, or arrange a private audition of the Dan D'Agostino Progression M550 Monoblock Amplifier.
