I'm currently powering my L150's and L65A's with a Crown PS-400. Excellent. I am currently using the preamp stage of a Sansui AU-7700, which is great, but I want to use the integrated in another room so I am looking for a new preamp that is rack mountable to pair with the Crown. I've read a lot of good about the Crown PSL-2 but they seem to hold a ton of value, maybe more than their sound would suggest. I have a Soundcraftsmen DX-4200 but it's giving me some noise so I'm looking to pick up another til I sort that out. For the cost of the PSL, I can get a Bryston 0.5B and I've even seen a Pioneer Spec-1. Not trying to limit myself to rack only, but that is how I'm setting up this room. Thoughts?