Yeah except at what Voltage output are the THD figures specified and what about inband intermod i mean it's fine to rate IMD at 19Khz and 20Khz but would like to see actual inband specs and are they measured or predicted
Also like the drive on the constant current source similar to the OPA SUN V2, but all those base emitter junctions means we limit the output swing to about VCC/VEE - ~2V probably more to keep the distortion down. Maybe run the supply at +/- 20V and regulate down for the opamp.
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