Brad ,I did in fact have the Maggies and they were very good speaker, they didn`t fit the room as well as I wanted {WAF}, you what I mean,plus the low end was not what I wanted either. I sold them and bought Innersound Isis, these are great speakers .I have them also on Audiogon too, to pay upcomming taxes, but have found the money to pay it , so maybe I won`t have to sell them.Now the upgrade will cost $250 I`m sure Mark will do the fuse for you while its up the for the Magnum mod, the tubes will set you back about $30 to $40.The next thing I`m going to do is buy the Zero autotransfomer to help drive my speakers with the Rogue amp, the amp should sound a whole lot better driving a high impedence load than a low one, I`ll let you all know how this turns out. Don`t buy the sub yet, this autofomer may help the bass alot. Greg