What does High Current mean?


I am confused. I know that the Sim Audio W-5 goes from 190 W at 8 ohm to about 1200 watts at 1 ohm. It has two 1 KW transformers for each channel....and then, I saw this YBA amp, called HC for HIGH CURRENT that barely produced 80 watts at 8 ohm, 170 watts at 4 ohm and then 1.2 KW at .7 ohm. How is this possible? If you double the wattage at halving the resistence, then the math would not work. Can someone explain this to me? Thanks!

PAUL
bemopti123

Showing 1 response by geddie

A beautifully clear and succinct explanation, Ghostrider45.

This is seldom emphasized or explained well by reviewers. What we frequently hear instead -- often from sellers -- is, "this amp is much more powerful than it's output rating suggests," or words to that effect. Unfortunately, few readers or prospective buyers seem to believe the claim.

But, I know from personal experience that the statement can be amazingly true when you have a very difficult, low impedance speaker to drive and can use a well-designed, well-made amp that doubles down all the way to 1 or 2 ohms. A seemingly insignificant output at 8 ohms can easily translate to BIG output at 2 ohms if it's the right amp. Surprised the heck out of me!