Changed to the power filter used by the US poetry, and connected the sony A9F TV and the Pinener Blu-ray Disc player UDP-LX800 to the power supply. The music output from the amplifier is not noticeable. The improvement is visible on the TV, and the brightness of the entire screen is increased. , The resolution of fine grain is improved, the distortion of image corners and burrs is reduced, and there is expected improvement. It is worth recommending products based on price.