I'm in the UK. Acrylic panels supplied by www.razorlab.co.uk. 3D side cheeks and the 4 mounting bushes from https://midlands3d.com/ . Both companies produced excellent components from the design files. I did have 2 problems with my first Teensy 4.1. The first was my fault - I left too big a gap between the cpu board and the audio card - this resulted in the assembly being too tall to fit in the case. The 2nd problem was with soldering the USB client wires to the underside of the Teensy. The solder pads are so small that when I bent the wire back to fit on the main PCB, one of the pads pulled off the Teensy completely with no way to repair. Fortunately, the USB client could still be accessed via the micro usb connector on the Teensy board itself. As a result of the above problems, I built a 2nd Teensy/Audio card combo being careful to keep the 2 of them sandwiched close together but ensuring no components touched each other. This time, when I soldered the data lines onto the bottom of the Teensy, I added a blob of superglue to reinforce the fixing.
The only other point of note during the build was in adding a 100 ohm resistor into the SCK line to reduce the background noise at high volumes that some have commented on. I cut the track on the main PC with a craft knife and the soldered the resistor directly from the back of the Teensy to the solder pads of the display - worked a dream.

How does it sound -fantastic! Really deep base and crystal clear highs. Some very nice sounds amongst the factory supplied patches. I'm not much of a sound programmer and am looking forward to the user community making more available. One development to the firmware that would be very useful is a mode to put the unit into USB Mass Storage mode (ala PreefFM2) to enable patch files to be backed up and added from a host computer. Recommended - go and get one!

Arrived very quickly after order- well packed and the quality is superb - much better than I was expecting

I am gathering all the other bits to build next winter

Not build anything for about 35 years, so it's going to be fun

Can't seem to find a user forum/group anywhere - Facebook?

Does anyone in the UK know who can print the 3mm acrylic panels for the case?

I bought the bulk order - mainly because there was no shipping option to South Africa for the one-off synth, so I didn't get all the additional bits (display, 3d printed parts), but it was still pretty straight forward to get everything together. The Mouser bill of materials is a great start, although I found many of the parts out of stock and I spent a little time hunting down alternatives (of which there are plenty). Soldering is a little more than basic, with some of the through pins requiring a little care, but not at all difficult. The instructions are clear and step by step. I 3d printed my own display mounting from the files - the threads didn't come out well, but it works fine anyway. The only place I went wrong was not checking that the display I got had the backlight enabled by default - it wasn't, and the jumper to do it is on the bottom, so I had to add a wire between the backlight pin and 3V3, not a major problem, but do check before you solder it in if you want the neatest build.

I am running the synth without an enclosure while I wait for local industry to start up again in the new year to have that manufactured. It works out of the box with my USB midi keyboard and with Ableton Live.

The communications around ordering was excellent and the seller is very responsive and helpful.

I had a great experience so far and I only just got started. I highly recommend the TSynth - whether in bulk or single order.

Hello Electrotechnique First of all! The polysynth is excellent. The circuit board and front panel are very good quality. The design and layout of the control elements is clear. The sound quality is very good, the USB connection is annoying with a high "crackling" sound. The menu navigation is good, own patches are possible.
I can only warmly recommend the synth and the price-performance ratio is 5 stars !!!!

Some suggestions for the future:
1. Choices when ordering between red and black panels and ordering with / without front panel.
2. Eurorack compatible, slim PCB and front panel (128mm height)
3. a dimensional drawing of the holes and OLED cut-out for all DIYs who want to design their own front panel.
4. two pogo pins about 12.5mm instead of the cable for the USB host interface D + D-, I made it, works fine.

Many thanks for the great product!
Greetings
Thomas Effendy from Germany
info@musikandmore.net

Note the part number for the pots is not correct on the Mouser BOM. These call for a shaft length of 15mm, however Bourne measures them from the base. This netted me 2 orders of 40+ pots that had a total shaft length of 6mm when measured from the base.