{"product_id":"jeff-rowland-design-concentra-1-integrated-amplifier","title":"Jeff Rowland Design Concentra 1 Integrated Amplifier","description":"Delivering 100 watts RMS per channel into 8 ohms (150 watts into 4 ohms) with 16 amps continuous output current (28 amps peak), the Jeff Rowland Design Concentra 1 features three balanced XLR and three unbalanced RCA inputs, balanced pre-outs, tape loop, optical encoder volume control, and optional MM\/MC phono support. Machined from 6061 aluminum to suppress mechanical resonance, this integrated amplifier combines Rowland’s reference preamp and power amp topologies. A microprocessor enters a silent sleep mode during playback to eliminate electrical noise, while fully balanced outputs preserve total signal purity.  \n\nReviews praise the Concentra 1 for its rare balance of tube-like smoothness and solid-state control. Critics highlight its transparent soundstage, fatigue-free detail, and rich musicality across various speaker pairings. Owners celebrate its heirloom build quality, dead-silent noise floor, and precise volume control, considering it a landmark integrated amp that effortlessly rivals high-end separates.  \n\nCombining reference-level resolution and effortless power into a single chassis, the Concentra 1 offers a streamlined path to world-class sound. Anyone seeking to bypass the hassle of matching separate components while acquiring timeless engineering and deeply engaging playback will find this unit an essential, lasting upgrade.","brand":"Jeff Rowland Design","offers":[{"title":"Default Title","offer_id":67806139285785,"sku":"101712","price":2099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/101712-4.jpg?v=1792019867","url":"https:\/\/tmraudio.com\/products\/jeff-rowland-design-concentra-1-integrated-amplifier","provider":"The Music Room","version":"1.0","type":"link"}