Audiophile slang for an amplifier that uses vacuum tubes instead of transistors for amplification. See tube amplifier.
"glass audio." YourDictionary, n.d. Web. 24 June 2018. <http://www.yourdictionary.com/glass-audio>.
glass audio. (n.d.). Retrieved June 24th, 2018, from http://www.yourdictionary.com/glass-audio
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