Help me upgrade my Mac system?!

Hey everyone,

I am looking to upgrade my system, but don’t quite know where to start. Here’s the system:

McIntosh C2600 hybrid tube preamp
McIntosh MC152 autoformer SS amp
McIntosh MCT500 CD transport
Rega Planar 2 turntable
Sonus Faber Grand Piano Home floorstander speakers
AudioArt cables

The setup sounds great for well recorded vocals and even dance music, but it does lack a certain presence and “punch”, and liveliness for rock and pop music. Bass extension and overall presence and slam are not quite there either. My room is large, 16x30 with 20 foot ceilings.
What would you upgrade first? I don’t yet really want to go up to a bigger (heavier) SS Mac amp (462, 312) to save my aging back and due to current space concerns. I had an MC275 tube amp which I loved but it ran too hot for the room, especially in summer. Also bass definition and power was a bit lacking. I’m definitely open to tubes but need guidance from the experts.
Help! I’m considering the new Sonus Faber Olympica Nova series, or perhaps Vandersteen or Revel Performa F228. Perhaps an Audio Research SE type tube amp?

80% of what I listen to is live rock and roll. It took me twenty five years to figure out that dual subs solved all my "wants" in enjoying the live recordings to their most realistic reproduction. I too have a large and somewhat "bright" sounding room, two subs in stereo is the lost key I had been seeking, I'll never go back.
I have owned the Sonus Faber Grand Piano Home’s speakers and I feel that is your bottle neck. they are nice speakers but they don’t rock that well IMO.

I’ve been trying out some horn loaded speakers from Klipsch’s new heritage line and they give you the slam your looking for. also very efficient so you don’t need much power and will fill your room better then the Sonus Faber’s.

after that I’d ask what cart are you running on your planar 2?

after that I’d look at turntable upgrades maybe, I always found the Rega tables to lack a bit for rocking out.

I’m not that familiar with Mac gear so not sure if your using a DAC built in or not.

nice over all system though i bet you have good synergy with all the Mac gear that’s one of the hardest thing to find IMO.
Thanks all.  No room treatment as yet, and the cartridge with the Planar 2 is the Ortofon Red.   
Any suggestions for a turntable upgrade?  VPI?
Also, what do folks here think of the new Sonus Faber Olympica Novo speakers?  Or the Revel Performa line?  Should I even ask about B&W?
If you listen to a lot of vinyl, I would look at upgrading the phono stage.

try a manley chinook or an EAR 834P.
If you otherwise love your existing speakers, I agree, a stereo pair of powered subs might be the first thing to try.

Bass is stereo despite all the yap about bass being mono. Important for main music system, my speakers have 15" woofers. 

You could try 1 sub if budget or positioning limits. I do successfully use a single sub in my small home theater (velodyne, 1,000 watt servo control of 10"), . I also use a single sub in my office added to bookshelf speakers, a velodyne 12", servo, less power, I forget how much. Great for adding lows, but not imaging of lows which is not critical, but, wonderful for a main music system.

In any case, I suggest you get this CD, listen to Stereo Bass in your existing system, then have it for future evaluation. (I had it in LP, loaned to one of my son's friends, never got it back).

Make sure you can return the sub(s), get them, live with them for a few weeks, keep or return.

Self powered subs take a big load off of your amp, and a big load off the speakers. When not trying to do low bass, you have more positioning options with your mains, that can be quite advantageous.

I would keep source/tt upgrades for later, after you get the punch you are looking for.