Hi guys.. it seems that this amplifier has low volume.. i dont know whats the problem with it.. can u help me?
View attachment 61391
tnx a lot!
View attachment 61391
tnx a lot!
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It should never be used with low impedance headphones.
I think it should never be used period.
The 2.2k resistor in series with the headphones reduces the volume a little for 600 ohm headphones and a lot for low impedance headphones. It is not an amplifier, it is an attenuator.
The extremely simple circuit puts DC through the headphones that is bad.
I simulated it: