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Estimated price (community-sourced)
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The Dan D'Agostino Progression S350 Stereo Amplifier is a high‑power, solid‑state stereo power amplifier that adds a potent stereo option to the Progression family. It leverages Dan D'Agostino's Super Rail circuitry, trickled down from the Relentless M550 monoblock, to improve dynamics, lower distortion, and maintain exceptionally tight control over connected loudspeakers. Housed in a graceful, anodized aluminum chassis with massive milled heatsinks, it incorporates a 2,000 VA power transformer and nearly 100,000 µF of power-supply capacitance feeding a fully complementary driver stage and an output section with 48 power transistors (24 per channel), enabling 350 watts per channel into 8 Ω, 700 watts per channel into 4 Ω, and 1,400 watts per channel into 2 Ω. Frequency response runs 1 Hz to 80 kHz (-1 dB), signal-to-noise ratio reaches up to 105 dB (unweighted), and THD is around 0.015% at 1 kHz, 350 W into 8 Ω. Connectivity is via stereo XLR inputs and dual pairs of speaker binding posts. It measures approximately 17.875" x 9.0" x 23.0" (W x H x D), weighs about 115 lb, and is available in silver or black finishes. Optional Progression amplifier floor stands are offered in matching silver or black.
Amplification power output and characteristics
Analog signal output specifications
Input and output connections
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
Components that show up alongside the Progression S350 in real systems. A verdict means the pair has been checked for compatibility and headroom — open it to see how the two get along.
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Momentum S250 MxV's power @ 8ω is 250W against the Progression S350's 350W, its power @ 4ω 500W against 700W, its signal-to-noise 105 dB against 75 dB, and its thd 0.100% against 0.015%.
Both turn up in the same documented systems.
The Grandioso M1X's power @ 8ω is 300W against the Progression S350's 350W, its power @ 4ω 600W against 700W, its signal-to-noise 119 dB against 75 dB, and its thd 0.006% against 0.015%.
The No. 534's power @ 8ω is 250W against the Progression S350's 350W, its power @ 4ω 500W against 700W, its signal-to-noise 85 dB against 75 dB, and its thd 0.300% against 0.015%.
The Progression's power @ 8ω is 300W against the Progression S350's 350W, its power @ 4ω 600W against 700W, its signal-to-noise 105 dB against 75 dB, and its thd 0.150% against 0.015%.
Momentum M400 Mono
Constellation Audio Centaur
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