the TTSH v4 is the same Version like TTSH rev.3 - but with bugfixes.
The TTSH v4 is only available by synthcube - Kits, Fullkits, cases - mostly everything you want.
If you're looking for an assembled TTSH or you want a modification, build, repair - Service- contact me
the Pinout problem of the Dual JFET 2N3954 in the VCO2 section (mainboard) is still available.
Build Guide from Antony "Fuzzbass" v1.7 (update 29.dec.2019)
added Midi Interface guide in v1.7
failure in previous guide: (1.2) corrected in 1.3 guide and newer
there's a failure with the 4012 VCF card, the capacitors between the matched 2N3904 must be 4x 0,01uF (10nF) C0G or polypropylene caps -
better to organise 1% Polyprop caps, you can mount it from the rearside too.