Topaz Low-Capacitance Isolation Transformers - for Affordably Clean Power, affordable solution for removing common-mode and normal-mode noise from your AC mains. Topaz ultra-isolator transformers as effective noise and surge suppressors that can improve audio quality. Topaz Ultra-Isolator transformers have extremely low inter-winding capacitance, which equates to being far superior at removing common-mode noise from the treble frequencies. New over $2000 dollars, moving must sale! 120V power plug and 2 120V outlets!