{"product_id":"dan-dagostino-progression-m550-monaural-amplifier","title":"Dan D'Agostino - Progression M550 - Monaural Amplifier","description":"\u003cdiv style=\"font-size:14px; font-family:Arial, Helvetica, sans-serif; color:#222; line-height:1.6;\"\u003e\n\n\u003cp\u003e\nThe Dan D'Agostino Progression M550 Monaural Amplifier delivers extraordinary power, control, and refinement through a fully balanced monoblock architecture engineered for reference-level music systems. Designed to drive even the most demanding loudspeakers with authority and precision, the M550 combines immense current capability with exceptional transparency and dynamic realism.\n\u003c\/p\u003e\n\n\u003cp\u003e\nDerived from technologies developed for the flagship Relentless Series, the Progression M550 incorporates Dan D'Agostino’s proprietary Super Rail circuitry along with a massively overbuilt power supply anchored by a 2,000VA transformer and nearly 100,000 microfarads of storage capacitance. Advanced thermal management is achieved through large elliptical heatsinks milled from solid aluminum billets for superior cooling efficiency and long-term reliability.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe discrete balanced signal path and upgraded high-power output devices provide enhanced bandwidth, low distortion, and increased Class A operating range for improved tonal accuracy and musical detail. Completing the design is the company’s signature Swiss watch-inspired analog power meter integrated into a precision-machined aluminum chassis.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eAvailable in Silver or Black finishes\u003c\/strong\u003e\n\u003c\/p\u003e\n\n\u003ch3 style=\"color:#f39c12; font-size:14px; margin-bottom:6px;\"\u003e\n\u003cstrong\u003eFEATURES\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cul style=\"margin-top:0;\"\u003e\n\u003cli\u003eFully balanced monaural power amplifier design\u003c\/li\u003e\n\u003cli\u003eDan D'Agostino Super Rail circuitry\u003c\/li\u003e\n\u003cli\u003e550W continuous output into 8 ohms\u003c\/li\u003e\n\u003cli\u003e1100W continuous output into 4 ohms\u003c\/li\u003e\n\u003cli\u003e2200W continuous output into 2 ohms\u003c\/li\u003e\n\u003cli\u003eExtended Class A operating range\u003c\/li\u003e\n\u003cli\u003e2,000VA linear power supply transformer\u003c\/li\u003e\n\u003cli\u003eNearly 100,000μF power supply capacitance\u003c\/li\u003e\n\u003cli\u003eDiscrete direct-coupled signal path\u003c\/li\u003e\n\u003cli\u003e48 high-current output transistors\u003c\/li\u003e\n\u003cli\u003eSingle balanced XLR input\u003c\/li\u003e\n\u003cli\u003eCustom speaker binding posts\u003c\/li\u003e\n\u003cli\u003eHigh-efficiency elliptical aluminum heatsinks\u003c\/li\u003e\n\u003cli\u003eSwiss watch-inspired analog power meter\u003c\/li\u003e\n\u003cli\u003ePrecision-machined aluminum chassis construction\u003c\/li\u003e\n\u003cli\u003eAdvanced amplifier protection circuitry\u003c\/li\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color:#f39c12; font-size:14px; margin-bottom:6px;\"\u003e\n\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Monaural Power Amplifier\u003cbr\u003e\n\u003cstrong\u003eAmplifier Class:\u003c\/strong\u003e Class AB\u003cbr\u003e\n\u003cstrong\u003eOutput Power:\u003c\/strong\u003e 550W @ 8Ω \/ 1100W @ 4Ω \/ 2200W @ 2Ω\u003cbr\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 1Hz – 80kHz, -1dB \/ 20Hz – 20kHz, ±0.01dB\u003cbr\u003e\n\u003cstrong\u003eSignal-to-Noise Ratio:\u003c\/strong\u003e \u0026gt;75dB A-weighted \/ \u0026gt;105dB unweighted\u003cbr\u003e\n\u003cstrong\u003eTotal Harmonic Distortion:\u003c\/strong\u003e 0.015% @ 1kHz, 550W @ 8Ω\u003cbr\u003e\n\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e 100kΩ\u003cbr\u003e\n\u003cstrong\u003eOutput Impedance:\u003c\/strong\u003e 0.1Ω\u003cbr\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e 1 x Balanced XLR\u003cbr\u003e\n\u003cstrong\u003eOutputs:\u003c\/strong\u003e 1 Pair Speaker Binding Posts\u003cbr\u003e\n\u003cstrong\u003eDimensions (W × H × D):\u003c\/strong\u003e 17.875 × 9.0 × 23.0 in. (45.4 × 23.0 × 58.4 cm)\u003cbr\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 115 lbs (52.2 kg)\u003cbr\u003e\n\u003cstrong\u003eFinishes:\u003c\/strong\u003e Silver or Black\n\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Dan D'Agostino","offers":[{"title":"Silver","offer_id":51744736411936,"sku":null,"price":25000.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":51744736444704,"sku":null,"price":25000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/3728\/1568\/files\/ChatGPTImageMay26_2026_10_33_59AM.png?v=1779806647","url":"https:\/\/salon1audio.com\/products\/dan-dagostino-progression-m550-monaural-amplifier","provider":"Salon 1 Audio","version":"1.0","type":"link"}