The problem with doubling comes at the

Random example:

https://www.stereophile.com/content/luxman-l-509x-integrated-amplifier-measurements

"With clipping defined as when the THD+noise in the output reaches 1%, I measured clipping powers of 154Wpc into 8 ohms (21.9dBW, fig.5) and 250Wpc into 4 ohms (21dBW, fig.6)."

*limits*of the device.Random example:

https://www.stereophile.com/content/luxman-l-509x-integrated-amplifier-measurements

"With clipping defined as when the THD+noise in the output reaches 1%, I measured clipping powers of 154Wpc into 8 ohms (21.9dBW, fig.5) and 250Wpc into 4 ohms (21dBW, fig.6)."

"Using the conventional 1% THD definition of clipping, the Rotel puts out 291W into 8 ohms with one channel driven (24.6dBW), 558W into 4 ohms (24dBW), and even 800W into 2 ohms (23dBW)!"

I hope we'll agree that 558W is not really far from 291 being doubled.

https://www.stereophile.com/content/rotel-rb-1080-power-amplifier-measurements

That amp has been rated as 200W by Rotel. Mine is rated at 140W and it really doesn't make any sense to push it to the max as speakers will not sound very well there and my neighbours will not talk to me for a while.

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