This amp uses only 2 transistors, one J113 JFET and one BD139.
And only 4 resistors.
What is different is there is no feedback.
Because of this there is some distortion, THD 0.5% at +10dB into 32 Ohm.
The amp should probably work into headphones 16-600 Ohm.
But the design was only developed using 32 Ohm.
And only 4 resistors.
What is different is there is no feedback.
Because of this there is some distortion, THD 0.5% at +10dB into 32 Ohm.
The amp should probably work into headphones 16-600 Ohm.
But the design was only developed using 32 Ohm.