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Audiophile Vacuum Tube Amplifiers - Design, Construction, Testing, Repairing & Upgrading, Volume 2: Popovich, Igor S.: 9780980622331: Amazon.com: Books
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![DIY Vacuum Tube Amplifier | [protofusion]](http://protofusion.org/wordpress/wp-content/uploads/2014/07/tube.jpg "DIY Vacuum Tube Amplifier | [protofusion]")
DIY Vacuum Tube Amplifier | [protofusion]
DIY Single Ended Vacuum Tube Amplifier : 12 Steps (with Pictures) - Instructables
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getAudio | The Best Audio DIY Kits » getAudio
