The revert un-reverts, on measurement: with the per-direction stamp sets
(render = the pad-proven PCM16-device/float-mix stereo split, capture =
device-format only), micpitch reads 440 Hz in as 440 Hz out at exact
peak. The octave-low voice was the driver DEFAULT endpoints disagreeing
(stereo render vs mono capture), never a raw-crossing design. The user
called the wrong verdict — the pad program 4ch success was the
counter-evidence that reopened the case.