All microphones were used on the same take, in the same room as close to each other as possible. All capsules were pointing at the same reference point on the sound source in an appropriate distance to mitigate slight variations by exact capsule position. Hence the proximity effect cannot be taken into account in evaluating the mics.

As all recordings are a sum of compromises, so is this one. The closeness of the microphone bodies to eachother will have an effect through absorption and reflection, though how much and how is impossible to say. In this test scenario I favoured relative position over possible sound alteration. This allowed for comparison of identical takes.

Preamps were either RME Fireface UFXs or Behringer X32*,  always with identical preamp choice, setting and (moderate) gain on each mic. All audio samples are normalised to -24 LU (LUFS-I) with -0,3dB peak limiting.

Mics:
DIY FET-47 Clone with RK-47 capsule (matched to V47), PCB by Vamisound, Moby 09331 Transformer

Vintage Telefunken U47 (Serial Number 525x)Reissue K47 capsule produced inhouse by Neumann in 1991 (small batch), Original VF14M tube

DIY Micparts V47 ,Mikrofonunion M7 capsule STW7, 12AY7 tube and 6.5:1 transformer

DIY Micparts V47, matched Micparts RK-47 capsule, 12AY7 tube and 6.5:1 transformer

Townsend Sphere L22 Modelling Microphone, with LD-47K modelling through UAD software

Schoeps MK4 small diaphragm condenser as reference mic

OTHER TESTS:
abx.funkybits.fr/test/u47-shootout-vocals-2
abx.funkybits.fr/test/u47-shootout-double-bass-3
abx.funkybits.fr/test/u47-shootout-acoustic-guitar-4