the more significative amplification is into current range so triple buffer can solve the quality problem of acoustic scene http://www.esafono.it/HEADBUFF.png using red LED in diamond buffer3 with BD139/140 final devices @ +/-24V

HELLO KEVIN! tries to mimic the pattern without current source (no with fet) and with the bootstrap (the voltage is lowered to 12V) I think it is better for several reasons

this idea is swap input transistor of traditional diamond buffer with jfet http://www.esafono.it/stee_headphone.png

http://www.esafono.it/WILSON-CFP%20AMPLIFIER.pdf

Hi,   each bipolar transistor can be replaced by a CFP in this case is a buffer to diamond and the CFP is balanced by a current mirror type Wilson http://www.esafono.it/HEADPHONE%20DIAMOND%20BUFFER.png