This vintage Allison Image Speaker Control is a must-have for any audio enthusiast (2x4.5in). Designed with high-quality materials and impeccable craftsmanship, it is perfect for those looking to enhance their music experience. The brand name "Allison" is synonymous with exceptional sound quality and this speaker control certainly lives up to that reputation. It was tested with the speakers that originally went with it. The original speaker surrounds were shot and not worth saving.