Before 6 months, i asked from Lineup to help me in the design of a discrete operational amplifier implemented with BJTs. Lineup is known for his preference in FETs, so he proposed the use of them as base. Because my little experience with FETs, and that i haven't any such part in my stock (instead a lot of BC550C-560C) i asked him to turn in BJTs. Lineup was positive in my request, and so we immediately started the design with extensive use of simulator. The main drawback of discrete operational amplifiers compared to monolithic ICs is their big sensitivity to power supply ripple noise, so we focused our design on this above all. Our design is an upgraded version of D.Jensen 918, full of CCS and optimized to work with supplies from +/-12V up to +/-30V be it so un-regulated. The result was a discrete OPA with just 5mV residual output noise when is supplied from a +/-24V un-regulated supply and less than 1mV when is supplied from common 7824 - 7924 voltage regulators. In the picture is the prototype module for the tests, and in the schematic is the design. Its bandwidth limit is 500 KHz. I will talk later for further details of this discrete OPA and i will present some measurements. To the present, the most interesting part is the resistor R3 which establishes the LTP current and should be optimized according to the supply level and the arrangement of OPA. Resistors R4-R5-R7-R9 are optimized for supply from +/-20V up to +/-30V.