Many years ago, I had used the Crown 300 with the 1-D speakers. As the years have passed I have had many other speakers from Magnepan..1.6, 3.6 and the 20. I have had good results from VAC, Classe, Audio Research and others with these Magnepans. I did use a Adcom 5800 for a time with the 20's while I was selling and buying something else. ..and the Adcom did a very good job with the Maggies. For a very reasonable price..the 5800 might be something to look at.