How can I tell if I need more power?

If you think you need more power , which you probaly do try a NAD C-370, i just got one and its GREAT 120 wpc you cant go wrong, it drives my massive JBL floorstanders real loud and clear with barely even getting warmed up.

1.mids are "far away from you" in the soundstage
2.the sound of drum doesn't stop on time
3.bass responce is "trailing behind"

4.heavy speaker load for amplifier may cause it to oscilate

always remember that it is easier to blow drivers with the lower power amp than with higher.

Vandees will rock and sing with Pass X250 or VTL Mb125 monos will do approximately the same as Pass or even better.

With tubes in fact you can go bellow lowest power requirement upto 60W/ch.

1st thing you might do is finding someone who will loan you an amp with lets say double the power you currently have. 1st thing you will probably notice is bass, you will have more. 2nd will be detail, you should be hearing instruments and little things in the music you never noticed before. 3rd will be more sound stage, a depth to the instruments that was not there. These things should occur at virtually any volume. At volume you will hear more impact, quickness if you would,, and just a general opening up to the music.
You have a great pair of loudspeakers there that can give you a whole lot more than what you are currently getting, and I bet you think it ain't bad now. If I am close enough(Nashville) feel free to give me a call, I have a # of amps that I would loan you for a day or two.

Great offer Jvia, & good for you! Dwpc: rule of the thumb, you should try around 100 good ss watts, some 60+ tube -- just to get an *idea* of what your speaker can do for you.

Connect with Jvia, I say (I live half-way round the globe) !

Jvia, thanks for the offer...but I'm in CA.