Amplifiers: High Current? High Voltage?


I've seen alot of mention about current-based and voltage-based amplifiers, and I am confused. I thought all amplifiers recreated the wave form by varying voltage, and their interaction with the speaker (and the impedence characteristics between the two) dictate what current is drawn. I understand that the power supply of some amplifiers is less current restricted than others, but my (current) understanding also says that all amplifiers work by controlling voltage. Is there really such a thing as an amplifier that controls current rather than voltage?
peter_s

Showing 3 responses by peter_s

Then what is the best way to describe a non current restricted amp from a current restriced amp? High current vs. low current? I assume a non-current restricted amp is one that will put out nearly twice the power at 4 ohms than at 8 ohms.
Gs5556, thanks for your detailed explanation. Dare I ask another question and understand the answer? How do large storage caps play into that current/voltage/power equation?
Thanks Herman. That's what I was getting at with my question about capacitors. I assume all prior discussion about transformers has been input transformers.