| APA | Smart Define. (1970). headphone amplifier thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/headphone_amplifier/thesaurus/related |
| Chicago | Smart Define. 1970. "headphone amplifier thesaurus" https://smartdefine.org/headphone_amplifier/thesaurus/related (accessed September 25, 2026). |
| Harvard | Smart Define 1970, headphone amplifier thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/headphone_amplifier/thesaurus/related>. |
| MLA | Smart Define. "headphone amplifier thesaurus" 1 January 1970. Web. 25 September 2026. <https://smartdefine.org/headphone_amplifier/thesaurus/related> |