High Impedance Output Impedance: 10K, Output Amplitude: 0.7Vrms. Low Impedance Output Impedance: 600Ω, Output Amplitude: 3.5Vrms. Item Type: Preamp Board. 1 x Preamp Board. Silent On Off Circuit: This audio pre amplifier board is equipped with a silent on off circuit, and there is basically no impact sound when turned on and off.
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