The Knight Tube Amplifier KN 3220A is a vintage audio component manufactured by Knight in the United States. This tube amplifier, known for its quality and craftsmanship, is a sought-after item for vintage audio enthusiasts looking to add a classic piece to their collection. With its distinctive design and superior sound quality, the Knight Tube Amplifier KN 3220A is sure to enhance any audio setup with a touch of nostalgia and vintage charm.