Tubes?

I have Revel Salon 2 speakers. Sensitivity is about 85 db. and 4 ohms. They are power hungry speakers. Currently, I am driving them with McIntosh 601's and a McIntosh solid state preamp. I was look looking at a pair of McIntosh MC2301. They are tube amps rated at 300 watts into 2 - 8 ohm loads. I listen to all types of music (sometimes at very high levels). I never run out of power with the 601's, but I am very intrigued with tubes. This may be a misconception, but I remember some friends who played guitar saying, tube watts were louder than solid state? Perhaps this is not really true or not true regarding home stereo. Perhaps the best idea is to keep the 601's and get a good tube preamp?                          Thanks, Dave