Like all the cases in Antec’s Sonata line, the Proto is a consumer case with an emphasis on quiet performance. In fact, it’s virtually identical to its predecessor, the Sonata III 500, except for a few small details. It’s not a gaming chassis—it lacks such essentials as cable management, toolless bays, multiple fans, or a removable right-side panel—but it doesn’t claim to be. It does claim to be silent, efficient, and affordable. So is it?
The Sonata Proto is on the small side for a mid-tower chassis, at eight inches wide, 16.5 inches high, and 18.5 inches deep. Its frame and side panels are steel, with a plastic front bezel and door. The side and top panels are painted a mid-quality matte black, with a glossy front panel and door. The door hides the front drive bays as well as the power and reset switches, and both it and the side panel have barrel locks on them. The rest of the case is unpainted metal. It supports microATX, Mini-ITX, and standard ATX motherboards, although a full ATX mobo will leave your rig feeling cramped. The motherboard tray is not removable and does not contain cutouts for CPU cooling backplates or cable management. In fact, the left side and top panel are one solid piece of rolled steel riveted to the frame, thus making the job of installing a system much harder than it needs to be.
Continue reading this review after the jump.