The following is an update on my initial review which is below. I managed to fix the volume issue, no more than a loose connection. I will however have to replace the machine head.
Regardless of not having a D string I gave it a spin;
Construction is acceptable for this price level, it looks good, the frets are surprisingly well finished.
Sound acoustically is good but very quiet, you would need to be amped for any band situations.
Plugged in through a Phil Jones Bass C4 cab Phil Jones D400 head the bass has extraordinary bottom end, but the treble is a bit too thin near the top of the dial.
Overall an instrument I will mainly use for noodling and technique exercises - but that's fine with me.
Upgrading the scores accordingly, would have scored well without the faults.
Delivered today, out of the box it looked great but noticed an issue with the D string machine head when tuning, it would not rotate, couldn't tune instrument. Decided to check the sound amplified anyway then got a bigger surprise - no volume at all from the pick up, totally dead.
Have dealt with Thomann before and they are usually great, so have contacted them for a return and replacement, when I can hopefully provide a more positive review.