This is a bit of an experimentalist amplifier - the transistors on the BoM won't give you that much amplification however if you put some power transistors in there like BDT63/BDT62 you will get a lot more amplification.
I made this for my iPods headphones and essentially what I did is make one board for each channel so I can stack them on top of each other and it is quite a compact nice little amp.
