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OPA2117为什么没什么低音，网上评价它接近OPA627,但实听差好远呢。我现在用+/-12V 供电，影响大么？
和您确认下型号，TI的官网上查不到OPA2117这款运放，另外，OPA627低失真，低噪音，高精度的特点决定了它非常适用于audio 领域。
