The Luxman SQ-507X is an integrated amplifier that was part of Luxman's lineup during the late 1970s. It features a unique design with a solid metal chassis and offers a powerful output suitable for driving a variety of speakers. The SQ-507X is known for its warm sound characteristics and build quality, typical of the Luxman brand. It includes multiple inputs for various audio sources, tone control options, and a built-in phono stage, making it versatile for vinyl enthusiasts. The amplifier is also recognized for its aesthetic appeal, often featuring wood paneling and a classic faceplate design that aligns with the audio equipment styles of that era.