Any way a preamp can drive small speakers?


Does a preamp have enough power to drive small speakers on its own?
Could preamp output be mated to an impedance adjusting "black box" to bypass a main amp?
I've seen many preamps (Cary comes to mind) that look like they could do it.
128x128dweller
With a transformer, some preamps might be able to drive small speakers at low volume but there's a reason they are preamps, not amps: inadequate power!
Some of the older MacIntosh preamps have jacks and low powered amps in them that will drive a pair speakers.
Preamps by themselves don't have the current to drive low impedance loads nor the output voltage to drive high impedance loads. If another driver (gain) stage is added, it can be done - then it would be called an integrated amp :)