AB100 Class AB Power Amplifier

Still a lot of work, but getting there...;)
 

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I plan to try the AB100 at lower, +/-30V rail voltages and increase the output bias current as suggested before by multiple members, including NP. Do I really need the 4 output pairs, then? From a SoA point of view even 1 TIP142/147 pair would be safe at 4 Ohm load, whereas 2 pairs seem to be an overkill already. How many pairs would you use at +/-30V rails and why? If it is less than 4 pairs in the end, do I need to adjust something in the front-end?

Thank you,
Miklos