The 1.2MW project at Ramsey Sound features three generators that sit on a triangular frame and the company said it would generate enough electricity to power up to 1, 000 homes.

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We've never seen all three on the same disc and it is a unique opportunity to confirm that all three sound exactly the same on your system -- at least in theory they should.

ENGADGET: Spears & Munsil High Definition Benchmark Blu-ray mini-review

Grohl held an all-star, three-hour-plus show with those rock icons, who performed at the Sound City Studios in Van Nuys, Calif.

WSJ: Nicks, Fogerty, more perform with Grohl in NYC