You might or might not blow your speaker drivers depending on how powerful your amplifier is or depending on the output voltage of your CD-player. If your player produces no more than 1.5Volt in output than you'll probably have a loud but still listenable sound out of your speakers. It is a good practice to experiment with passive preamplifiers that attenuate a signal and give you an option to match output impedance of preamp with input impedance of power amp. The ideal case will be the infinite input impedance of power amplifier and zero output impedance of preamp. Things aren't ideal in this world so if your power amp has >=50kOhm input impedance, than you're OK with passive preamplifier which isn't realy amplifier since it doesn't have any gain. If you have a tube amp it'll work out great.
Running a CD player directly into power amps,
good, deleterious, dangerous or simply stupid? Since I never listen to my tuner, and am too lazy to bother with vinyl anymore and never got that tape deck (thank God!), can I go the direct route? An "audio consultant" (a.k.a "salesperson") told me it was unthinkable because of some mismatch in the output of one and the input of the other... He was trying to sell me a preamp. Since, long ago and far away in a different audio galaxy, it was believed that the shortest signal route (all other factors being otherwise equal) would provide the best, least degraded signal, I thought, and still think for that matter, that my idea is swell. A better CD player + a better power amp + new earthshaking speakers and voilà! Am I missing some great truth here?