Your power amp can handle 0.75V or 2.5V at the input. Why would you make your preamp output >10V? It wouldn't work with you amp.
In general, it is better to put more gain in the cleaner environment (preamp), but both pre and amp have to be designed for that (like my Benchmark DAC3 and AHB2) - otherwise it doesn't make sense.
In addition it is not an issue of different opamp - they don't set the gain, circuitry around them does and changing it would be like redesigning it.
In general, it is better to put more gain in the cleaner environment (preamp), but both pre and amp have to be designed for that (like my Benchmark DAC3 and AHB2) - otherwise it doesn't make sense.
In addition it is not an issue of different opamp - they don't set the gain, circuitry around them does and changing it would be like redesigning it.