Group 2 with a monkey wrench in your plans.
Swap the preamp for the Classe CP-800 (which has a DAC built in, including USB), and most importantly, it handles bass management like a champ.
Next - add in two JL Audio F110 subs (instead of upgrading from the xa60.5 to the xa100.5...you can always do that later if you so desire, but the xa60.5's I heard have PLENTY of power).
I have owned the Maggie 1.7,s, I currently own the JL Audio F110's and the Classe CP-800....I have heard the Pass xa60.5 and LOVED it....so much so that I am buying the xa160.5's.....so I know of what I speak!
Forget the tube pre...the Pass amps will provide all the warmth and detail you need. The JL Audio F110's will round out the bottom end BEAUTIFULLY on the Maggies and the CP-800 will allow you to control everything - connecting up to two stereo subs, setting the crossover points, allowing you to use its DAC and so much more.
You should be able to negotiate hard on some of the prices. I paid $1400 each for my JL Audio F110's (new), $3400 for my CP-800 (new). Not sure of the cost of the Maggies or Pass xa60.5....but try to get 20-25 points off. Hope this helps.
Lastly, if you find yourself getting heavy into vinyl down the road, you can always add a separate phono stage later. However, digital is definitely the way to go with the setup described. Run a Mac Mini with all your CD's ripped to Apple Lossless, download some high res tracks from HD Tracks, add in a program like Audirvana + with iTunes, connect the Mac Mini USB to the USB on the CP-800, and control everything from your ipad (using Apple Remote). Sit back and soak it the tunes!
NOW you have a setup that will rock!
Mike
P.S. Classe is coming out with a software update for the CP-800 which will give it some additional functionality including AirPlay, etc. This may or may not matter....but just thought I would pass it along. See John Atkinson's review of the CP-800 in Stereophile if you don't believe me! :)
