What does Current mean in a power amp???

refere to ohm's law:
P = U*I = U*U/R.
where P is power, U is voltage and I is current.

If you have 8Ohm speakers than the current passed during the maximum power transfer of 100W/ch amp will be approximately 3.7A basing on above relationships.

Research 8th grade physics.

Marakanetz, I made it to the 17th grade without ever taking Physics. You can't be from the US, we lag behind most countries in math and science. Even English, heheh. But I'll definitely look into Ohm's Law. Thanks.

Ray Dall, Electronics Theory.com site here is good for basics on ohms law, circuits about as briefly as is possible. About 50 pages (big print.) An overview of tubes begins on page 37.

I remain,

Look for an amp that has a high power rating into 4 ohms. An idea high current amp will double it's rated power into 4 ohms. Most amps can't do this but my Bryston goes from 240 wpc to 400 wpc from 8 to 4 ohms. Look for my posting talking about the difference between "Sony watts" and "good" watts.

If your speakers impedance is rated (nominally) 4 ohms or less, or if certain frequencies dip much below 4 ohms, you will need a power amp that is rated into 4 ohm loads. The lower the impedance, the more current being drawn from the amplifier. Amps put out volts, the load draws current. I'm being very general here for the sake of brevity because there are many factors to consider, such as room size, how loud you listen, etc. There are other things to know about your speakers, such as minimum impedance dip, phase angle,
electrical sensitivity (sometimes referred to as efficiency) and such. Ask the speaker manufaturer.