Hi Sherod,
I'm using Elrods on all my components, including line conditioners. I was one of the early users of the original cords. In fact, I even got to try an EPS-1. I kept on upgrading and trying different combinations. Yes, the 3 versions are designed for amps, and that's where I've used them. I tried a 3 on my preamp and my digital components, and found the bass was somewhat bloated or wooly. I hope this helps.
I'm using Elrods on all my components, including line conditioners. I was one of the early users of the original cords. In fact, I even got to try an EPS-1. I kept on upgrading and trying different combinations. Yes, the 3 versions are designed for amps, and that's where I've used them. I tried a 3 on my preamp and my digital components, and found the bass was somewhat bloated or wooly. I hope this helps.