Hi, my name is Quan and I am new to this forum. I am trying to build a discrete operational amplifier but I am very weak with circuit designing since my concentration is in communication. Anybody here have a lot of experience building analog op-amp circuits? If you are in the area then that's great but I am sure we can still work together through the internet otherwise. The spec for the design is as follow: Two inputs: 1 plus and 1 negative Discrete devices (BJT, FET, TUBES) only Gain between 1000 – 1500 to provide a maximum +/10 output signal Frequency response DC – 10 Mhz +/- 2db Has to be able to drive a 50k load Input impedance of at least 1 Megohm Output impedance less than 50 ohms Temperature range: 25 – 100 degrees Celcius Please e-mail me at firstname.lastname@example.org if you can help. Thank you in advance!