Autotransformer 100–70–50–35–25–17–12 V/100 W, for volume control with CT3108 switch. Enhance your audio setup with this versatile autotransformer, designed for precise volume regulation. The CT3108 switch allows for seamless adjustments, ensuring optimal sound quality. Ideal for various audio applications, this 100 W transformer offers multiple voltage options to suit your specific needs. Upgrade your sound system today with this high-quality autotransformer.