Hi folks, I want to consolidate the audio from my 3 active PCs and DVD player into one output to my HD-590 headphone. Selectable would be nice but I don't mind to have them all active at once. Right ...
The circuit was designed to create a line preamplifier by acquiring the use of double triode tubes. The circuit comprises of three parts, the main preamplifier circuit with tubes, the input selector ...
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