{"product_id":"margules-audio-u280-sc-25th-anniversary-tube-power-amplifier-1","title":"Margules Audio U280-SC 25th Anniversary Tube Power Amplifier","description":"The Margules Audio U280-SC 25th Anniversary is a pure Class A tube power amplifier delivering 80 watts per channel in Ultralinear mode and 40 watts per channel in Triode mode, engineered with zero negative feedback. Serving as a versatile centerpiece, this component easily converts into a high-output monoblock configuration. It incorporates an Active Servo Bias system that actively tracks input signals and regulates bias, eliminating manual adjustments while supporting tube rolling with KT88s or 6550s. On-the-fly mode switching, individual channel gain controls, and a regulated shunt power supply maximize operational flexibility.\n\nCritical reviews across publications like Dagogo and Enjoy the Music celebrate this amplifier for its expansive, holographic soundstage and impressive bass authority. Reviewers praise its ability to combine the organic texture of triode operation with the dynamic punch required for complex passages. Audiophiles highlight how the active bias circuit allows low-level detail to emerge with natural warmth and zero listening fatigue across the audio spectrum.\n\nIntegrating this amplifier into your system brings an immediate sense of realism and scale to every recording. Its thoughtful engineering eliminates technical hassle, leaving behind a pure analog foundation that breathes life into delicate acoustic details. For the enthusiast seeking classic tube craftsmanship and deep emotional connection, it represents a definitive upgrade for daily high-fidelity listening.","brand":"The Music Room","offers":[{"title":"Default Title","offer_id":53187907420441,"sku":"100351","price":2649.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/100351-5.jpg?v=1789424373","url":"https:\/\/tmraudio.com\/products\/margules-audio-u280-sc-25th-anniversary-tube-power-amplifier-1","provider":"The Music Room","version":"1.0","type":"link"}