The Graphics Amplifier isn’t exactly portable ... According to independent tests that Digital Trends has conducted, the 980M provides roughly 75 percent of the power that the 980 does.

We know what you're thinking: What the hell is a "graphics amplifier"? (Some of you smartasses are probably also wondering if it goes to 11.) In fact, it is what it sounds like: The Amplifier ...

Earthquake’s new TNT Class-D amp has high-efficiency digital output; it is rated to produce 2,000 watts of power (1,000 RMS). Suggested retail prices on the amps in the TNT line are $198 for the T500W ...

NAD's D 3020 V2 amplifier is a blend of old-school analog and digital music with an even more attractive price point than before. Ty Pendlebury has worked at CNET since 2006. He lives in New York ...