nervine P100 stereo power amplifier specs:
Class A into 8ohm until 5Wpk
Vin 0.32Vpk / Vout 6.4Vpk 
THD: <0.0001%

1/3 Power output 56Wpk 8ohm
Vin 0.98Vpk / Vout 21Vpk
THD: <0.0024%

Max power output 151Wpk 8ohm
Vin 1.6Vpk / Vout 35Vpk
THD: <0.0035%

Max power output 260Wpk 4ohm
Vin 1.5Vpk / Vout 32Vpk
THD: <0.008%

Damping factor at 8ohm:
2032 @ 10Hz
2010 @ 100Hz
2008 @ 1kHz
1954 @ 10kHz
1812 @ 20kHz

Output impedance:
0.004 ohm @ 10Hz
0.004 ohm @ 100Hz
0.004 ohm @ 1kHz
0.004 ohm @ 10kHz
0.0044 ohm @ 20kHz

Gain: 27dB @ 1kHz

Response:

-1.3dB @ 5Hz

-3dB @ 190kHz

General design considerations:
singleton bjt IPS

Buffered VAS
Dedicated VAS bootstrap.
TMC Miller compensation
Resistive voltage spreader (more linear than typical Vbe multiplier) biased by mirrored floating ccs

Lateral Mosfet Output devices.