The Playstation 1's SMPS is actually good with the upgraded power cord and fuse. I chose an Isoclean fuse over the HiFi Tuning fuse since it is UL-approved. The dynamic range is noticeably better with the Isoclean fuse. A friend of mine who also uses a Playstation 1 for his digital source also installed an Isoclean fuse in his unit, and he started hearing more into the music. The Playstation does a great job at resolving subtle details. With the fuse upgrade on top of the power cord upgrade, I can hear a lot more of the interplay between musicians, especially where bells, triangles and other percussion instruments are used. Some background vocals are better conveyed as well.