As Lshreve suggested, the Maggie users group is a good place to research opinions on things like this. It strikes me that a number of products will match well with 1.6's, from the variety of producs that people find satisfactory. The reviews I have read lead me to believe that while the 1.6's certainly are revealing of the quality of upstream components, they are not exceptionally fussy about amplification if the amp is stable into a 4 ohm load. When I bought my 1.6's, the dealer also voiced this opinion. Intially, I used an Adcom 545 with quite decent results and have since upgraded to a Belles 150A Hot Rod. The upgrade has brought nice improvements as you'd expect. These are really wonderful speakers that will allow you to upgrade around them as funds and interest allow.
