What is a “high-current” amplifier?
The term “high-current” usually refers to the ability of an amplifier to deliver high levels of current with low impedance loads. The componentry used in high current amplifiers is capable of sustaining a high current levels without overheating. This allows the amp to be stable at low impedance loads.
A “high-current” amplifier is a high-performance amp capable of passing high current into very low impedances without overheating or shutting down. In a perfect world with a perfect amplifier, power output would double every time the impedance was halved. For example, an amplifier rated at 50 watts RMS x 2 channels into 4 ohms would produce 100 watts by 2 into 2 ohms. Unfortunately, this is not a perfect world, and most amplifiers can’t do that. The best way to identify a high-current amplifier is to look at what happens to the power rating as the impedance drops. The closer it comes to achieving the perfect world scenario above, the more current it is capable of passing.
