I received a version with through hole components.
On the audio PCB are 2 x 2SK170BL, 1 x BC547 and 1 x BC547.
Capsule is a 25 mm electret, that
looks like a TS-2555, but it isn't.
The original capsule is lacking the lowest frequencies.
Put in a
real TS-2555 and you've got a pretty decent microphone!
THIS is the link. (I bought it for 32 Euros!)
I have a feeling they just put in what they have available at the moment...
The PCBs look exactly the same as the ones from DaveLTX , the only difference is that my PCBs are black.