Unverified85% confidenceDecision RuleTime unknown
信噪比(SNR)≥120dB且THD+N<0.001%属Hi-Fi级，游戏娱乐用114dB足够；低于108dB的廉价内置卡底噪明显，接高灵敏度入耳会有电流声
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Unverified信噪比(SNR)选择：纯游戏/语音沟通≥110dB即可，音乐监听或Hi-Fi聆听建议≥120dB，两者差异在安静段落底噪可闻85% similarUnverified信噪比选购看DAC实测而非标称，音乐欣赏建议SNR≥120dB、THD+N＜0.001%；游戏/语音场景SNR≥110dB足够，追求高数值边际收益低84% similarUnverified厂标信噪比/失真数据要看测试条件：≥120dB SNR和＜0.0005% THD+N属优秀，但需确认是A计权及满功率下实测；'满血'指标常在无负载或1kHz下测，实际带耳机负载会下降82% similarUnverified信噪比与动态范围标称值超过120dB后对实际听感提升极小，人耳可辨极限约在110dB左右，为多几dB标称值付高价溢价不划算80% similarUnverified声音警报分贝≥90dB才能在嘈杂环境或包内准确定位物品，AirTag约60dB偏低（沙发缝隙可能听不见），Tile Pro达128dB更适合大屋子和听力不佳者78% similar
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