It interesting that the output impedance of the XP20 is 1000 and 100 for the XP30 given the very high input impedance of 100,000 ohms for all Pass power amps.
Pass certainly does not apply the normal ratio of +- 10, the XP30 and any Pass power amp has an output / input impedance ratio of 1000. I just find it interesting that PASS is not consistent across all the preamp models in respect of output impedance.
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