2.What does the 增益 switch on the E12A do?
A: Switching the 增益 to "high" increases the volume 和 power output 和 is suitable for high impedance or low sensitivity headphones; "low" 增益 is suitable for low impedance 和 high sensitivity earphones.
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A: Switching the 增益 to "high" increases the volume 和 power output 和 is suitable for high impedance or low sensitivity headphones; "low" 增益 is suitable for low impedance 和 high sensitivity earphones.
