Archives of Acoustics, 33, 4(S), pp. 135–140, 2008

Testing the Sound Quality of Acoustic Vacuum Tube Amplifier

Stanisław MALECZEK
Military Institute of Engineer Technology


The study presents analysis of basic electrical parameters and sound quality of two acoustic amplifiers: an acoustic vacuum tube amplifier and a transistor amplifier. Computer-aided measurement methods have been used through the tests. For the measurement of basic electrical parameters, specialized computer stands and a computer psychoacoustic model have been used. Additionally, audio monitoring has been carried out. The paper is an attempt of answering the question: why tube amplifiers, despite worse electric parameters sound much better than transistor amplifiers do.
Keywords: acoustic vacuum tube amplifier, psychoacoustic model, sound quality
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