Any op amp can be made to run on a single supply. The challenge is making one that valid common mode input range includes negative rail (easy), and swings all the way to negative rail without gross crossover distortion (and I do mean all the way to zero, not 50 mV above - call me when you have a solution that doesn’t waste power and have serious SOA problems).
Absolute maximum ratings +/-75V. That would be like saying +/-22 for an IC, when they recommend using and characterize it at +/18. And yeah, it’s not user-proof. You’d have to add as much circuitry as is already there to do that. It’s an idea, it’s a start. Lot of people around here just want everything handed to them, and life doesn’t work that way.
Absolute maximum ratings +/-75V. That would be like saying +/-22 for an IC, when they recommend using and characterize it at +/18. And yeah, it’s not user-proof. You’d have to add as much circuitry as is already there to do that. It’s an idea, it’s a start. Lot of people around here just want everything handed to them, and life doesn’t work that way.
An 150 VDC discrete transistor amplifier is verry usefull and practical because ease of acces to changes and other things in audio signal amplification. If it is working at 150 VDC means it can drive an output stage.
With 150V supply U6 and U7 dissipate 3W each worst case, 1.5W each with input at 0V, both well above what a 2N5551 can handle. U9 handles twice that power and will probably crack/explode.
Why an enormous 20mA standing current in the input transistors? 0.5mA would be enough I think and you'd have much less input current noise too.
Why are U1 and U2 high voltage transistors when they only see 2V or so?
[ You need to remove R7, R9, C3 to call it an opamp, the circuit shown is a fixed gain amplifier, not an opamp.]
There's no reverse-bias protection for the input transistors' EB junctions, could be an issue.
Why an enormous 20mA standing current in the input transistors? 0.5mA would be enough I think and you'd have much less input current noise too.
Why are U1 and U2 high voltage transistors when they only see 2V or so?
[ You need to remove R7, R9, C3 to call it an opamp, the circuit shown is a fixed gain amplifier, not an opamp.]
There's no reverse-bias protection for the input transistors' EB junctions, could be an issue.