The AMP-13R is a hi-fi amplifier for users who need a high-performance yet compact, minimalist system for connecting to speakers or headphones. The amplifier casing itself is just 27.5 mm thick and designed to dissipate heat directly. It has additional cooling elements that are ideally placed to draw away heat, while also functioning as feet. The red knob covered in urushi lacquer, as the central control element, provides access to all of the amplifier’s functions.