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Which sounds best?

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Why NAD's Flagship 3155 Integrated Looked Like a 1980s Budget Amp, But Didn't Sound Like One

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More Mods & Tests on the Dual TDA7293

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Technics Amp repair with NO PARTS!

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Build a discrete all-transistor RIAA phono preamplifier.

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Two Types of Tube Amplifier Hum and How to Determine the Source

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HYBRID AMPLIFIERS. Adding one of these, is not a good idea. WHY?