Well, I'll be using it for my headphone system (where I listen I can't use speakers, so I'm going for a nice headphone system). Currently have Grado 325's and a Creek OBH-11SE headphone amp. I have a bunch of units that will pass through my hands in the next few weeks, like the MG Head DT headphone amp and the Sennheiser HD600s...I'll try out amps and cans until I get something I really like. So I'm looking more for something thats versatile and will be good with anything. Upgrading from a PC sound card (using Winamp with the CD Reader plugin). I guess I'm a bit concerned about the Meridian because I often listen to rock and some have complained that it sounds confused in busier passages and also with it's lack of punch and liveliness. Anyhow, the used 506.20 and Rega Planet 2000 can both be had for about $800. (list price of the Rega Planet 2000 appears to be $1000, but it's already on Audigon for $800) Thanks for the help though.