http://www.positive-feedback.com/Issue22/sptech.htm
I see that was from before Bob increased the price. Those were the speakers I should have got - and I'll bet a Crown XLS will make them sound effortless.
I knew my Timepieces needed more power than the Nuforce ref 9s I was trying to drive them with, but I could not afford enough quality watts at the time.
I could hear something straining if I tried to monitor past around 75 - 80 dB but was not sure if it was the speaker at the low end of the tweeter's passband or the amplifier (now I think it was the amp).
I was was tempted to buy a Crown Macro Reference, but was afraid the sound would be coarse. I had the same preconceived notions about "pro" amps as many watching this.
As an aside, I read that the Crown Macro Reference was used in the development of the fabled Yamaha NS-1000, which is another speaker that needs an extraordinary amplifier to do its stuff properly.