Pre-owned and in very good condition. Refer to pictures. Comes with manual. The Audio Research LS3/3B Line Stage Preamp is a high-quality audio component that provides clean and transparent sound. With two channels and two outputs, this preamp is perfect for connecting multiple audio sources to your amplifiers or speakers. The sleek black design adds a touch of sophistication to any home audio setup. The Audio Research brand is known for its commitment to quality and performance, making the LS3/3B a reliable choice for enhancing your audio experience.