Yes, it is okay.
It is a two stages amp with diamond output.
You have very low distortion which indicate it is working well.
You could have a bit higher supply. +/-15 V is not much.
But it looks like it is a headphone amp. With BD139/140 at the output.
For a power amp you need to put stronger transistors at the out.
It is a two stages amp with diamond output.
You have very low distortion which indicate it is working well.
You could have a bit higher supply. +/-15 V is not much.
But it looks like it is a headphone amp. With BD139/140 at the output.
For a power amp you need to put stronger transistors at the out.