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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

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Unverified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85% similar Unverified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81% similar Unverified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 Unverified看动态范围（DNR）而非只看采样率：DNR≥120dB属于优秀水平，≥115dB足够日常听感干净，本底噪声决定安静段落是否有底噪嘶声，比32bit/768kHz这类营销参数更影响实际听感78% similar Unverified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77% similar

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