The Sherwood S-9400 stereo dynaquad amplifier is a vintage audio piece manufactured in Japan by Sherwood. This amplifier is designed to provide high-quality sound and features a dynaquad configuration for delivering a powerful and dynamic audio experience. With its sleek design and advanced technology, this amplifier is a sought-after piece for vintage audio enthusiasts looking to enhance their stereo system with a touch of nostalgia and craftsmanship. This item has been tested and does work