Source:
4 Channel Audience Matrix. source 1: Nakamichi CM-300 (CP-1) > Tascam DR-680mkII (channels 1 & 2), source 2: Tascam PE-120 (omni caps, spaced @ 14") > Tascam DR-680mkII (channels 3 & 4)
Lineage:
Tascam DR-680mkII> USB > PC > Audacity v2.3.3> wav (16/48) > CDWave > Trader's Little Helper > flac16 (level 8 compression)