The most reliable guide to power ratings isn't the specs provided by the manufacturers but the measurements made by our technical editor. He follows the mandates of the Federal Trade Commission in measuring power output and distortion with all channels continuously driven (along with a less-demanding two-channel spec). When objective third-party measurements aren't available, here's a quick-and-dirty means of sorting high-power receivers from the junk: Just feel the weight. Aside from the nefarious inclusion of useless lead weights, more pounds indicate either the presence of a heavier power supply or a heavier, more-sturdy chassisideally, both. All things being equal, with conventional amplifiers, you don't need expensive test gear to figure out that a 50-pound model is likely to play louder and cleaner than a 15-pound lightweight, even if both are rated at 100 watts per channel.
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