ORTF: 8040s (preamp gain 65 dB).
Mid-Side: 8050 and 8030 (preamp gain 65 dB; both channels at 0 dB in M-S decode).

Parallel raw clips to illustrate the difference in recorded levels between the ORTF rig (first clip) and the M-S rig (second clip), both recorded on the same recorder and both with 65 dB preamp gain. (Note how the Boobook Owl pauses its calls during the loudest and nearest part of the jet's passage.)

In all of the subsequent parallel clips, the ORTF recordings have been given +5 dB gain, which brings them very close to the same loudness level as the decoded M-S clips. Both rigs are similarly self-noisy under higher gain settings: neither is ideally suited to extremely quiet nocturnal ambience recording. (According to the manufacturer's specs, all three types of microphone have a self-noise equivalent of 13 dB (A-weighted).)

ORTF and Mid-Side (Parallel Recordings). 1. Boobook and Jet.

Ongoing experiments, tests, and comparisons involving field recording gear and rigs, made for my personal practical experience and use. In case they might also be helpful or useful for other field recordists, I will be posting them here.

ORTF and Mid-Side (Parallel Recordings). 1. Boobook and Jet.

Field Recording: Experiments and Comparisons