Thiersch capsule with no tubes

I'm considering a Thiersch blue capsule build with some sort of non-tube amplifier. Maybe schoeps circuit or a neumann circuit clone.  Has anyone got great results with this type of thing or is it a risk?

PVC M7 in a transistor mic?

Not a risk as far as Microtech Gefell is concerned. 

Isn't that some sort of blasphemy? ;D A "vintage" capsule with sand in the electronics? Heathen!..

Cue the villagers with torches & pitchforks...

Vintage, vintage...

Great capsule, for all purposes!

Yup, here it is:
http://www.microtechgefell.de/index.php/de/mikrofone/broadcast-a-recording/grossmembran-transistortechnik/214-mt-71s

The headbasket is a little cramped, though.
I would use a bigger one.
The modern M930 (which has a Mylar/polyester capsule BTW) has this small basket, as well. The M1030 is basically the same microphone but has a bigger basket. The latter sounds so much nicer to my ears.
http://www.microtechgefell.de/index.php/de/mikrofone/broadcast-a-recording/grossmembran-transistortechnik/211-m930
http://www.microtechgefell.de/index.php/de/mikrofone/broadcast-a-recording/grossmembran-transistortechnik/212-m1030
The SYT-5 body has a good size and shape basket IMO. Plus plenty of room for electronics.
Or you could use an M49 style body.  Some members offer these, but the development has been taking some time. Ben Sneesby is working on one for this community now, too. I expect him to be quicker.

Regarding the MT71S schematic I think I remember the late Oliver Archut wasn't too fond of it.
But not everyone agreed.
Older ones (M70 etc.) had a transformer (preferred by many), but also GDR parts that some will have mixed feelings about.

If you want to use a circuit with a transformer and sand just combine the M7 with the circuit of one channel from the USM69.
This is basically a U87 variant without the HF shelf. 
Tranny could be a Haufe T14/1.

The M71s is not bad - don't believe whats spread around the web or the hearsay.
Try for yourself. I know a lot of people who favor it to a U87...

Or just KM84 circuit

Agree with M71, can be improved a little, but stock is pretty good.