LM317T Voltage Regulator with Pass Transistor

In this small video (320 X 240 and 30 frames each second) you will be able to see the comparison. Both amplifiers are absolutelly the same, the transistors are the same, the resistances, the board, the capacitors and so on...also the power, the voltage and the currents into the stages. Only the method to feed current to the differential long tail is different, one uses a zener voltage regulator (Dx amplifier standard method) and other use a CCS..but both with absolutelly and exaclty the same current. The idea is to check if there's difference into the simulator, into the scope and also into listening tests.



http://www.youtube.com/watch?v=X1vqAGuSwSk&hl=en