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11 Feb 2010
This tube amplifier replaces a solid-state amplifier which was driven by a tube preamplifier. For the tube amplifier circuit I used a cutoff pentode (6SJ7 or 6SD7) driving a beam power pentode (6L6 or 5881) in a single-ended circuit (class-A operation).
6L6 / 5881 Single-Ended (SE) DIY Tube Amplifier - [Link]
One Response to “Single-Ended (SE) DIY Tube Amplifier”
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February 11th, 2010 at 2:48 am
Why would anybody want an old low power tube amplifier? This one has no specs.
Its output power might be 7W when the distortion will be unbearable (10%?) and its frequency response will have no bass and no treble frequencies. It doesn’t even have any negative feedback so its damping of the resonances of a speaker will be very low.
Where on earth will you find an output transformer for it?