McIntosh MC152 vs MC162


Dear Mac owners, can you give me an idea if there is any substantial sonic differences btw MC152 and MC162? Technical data of both doesn't look far apart, while price wise MC162 is twice less expensive, which makes it twice more attractive.
vad58
Take a look at Audio Classics inventory of preowned Mac gear. Terry DeWick, who is a Mac repair guru also has a website linked from his that sells used gear Terry has checked out. I bought an mc250 from an Ebay seller, had Terry review and upgrade it before shipping to me. Its been great for5 or 6 years. Probably will trade up next year. If you don't lime it you can usually sell it and recover most of your investment. 
Thanx joekapahulu, I know about Audio Classics. Several years ago I've bought from them Mac MC275 and it was in like new condition. I used it for quite some time but due to my listening habits came to conclusion that I prefer SS power amp. I made this switch and honestly speaking quite satisfied with results, but that ansatiable audio bug of ours force me to look for smth better, and Mac SS looks like a first natural choice.
May I know what is the merits of employing dual balanced circuitry on the design of the power amp?