Yes thanks, I found these:

https://www.digikey.de/products/de?keyw ... -MSS420004

https://www.digikey.de/products/de?keyw ... 22-23-2081

Here for switches in Germany:

https://www.develektro.com/ALCOSWITCH-T ... A-125V-THD

in the bom it says we need 2 x 647-UPS1E222MHD 2200/25 but in the parts lst it is 2200/35 also all resistors are 1% and yocto 1 used 5% is this gong to effect the sound? and will 2200/25 be ok instead of tthe 2200/35?

The voltage ratings for the 2200uf caps should be fine. Feel free to replace the 25V with a 35V or 50V. Just ensure the lead spacing, diameter and height match the one in the BOM.

I believe the original x0x line used 10% carbon comp resistors. With that variance it is likely that there was a lot of variance in sound between each device. They did this because 1% resistor prices made them too expensive to include in the product. 30+ years later we have made manufacturing advances and 1% resistors are now affordable to use in a product like this. Going with 1% resistors, where possible, will get you as close to the original design as possible.

Is this the switch that comes with the kit? https://www.rapidonline.com/diptronics- ... ed-78-1730

I have one that doesnt work and needs replacing.

Hi

IC3 CD4049UBEE4 is sold out in MOUSER and DIGIKEY
It is expected to take several months for the arrival.
Can you purchase it somewhere?

Octapart just lists Quest as having it in stock:

https://www.questcomp.com/QuestDetails. ... partsearch

hi Acetate

Thank you for telling me that information.
I am glad to inform you that the problem is now solved.!!

is CD4049UBE a suitable replacement for CD4049UBEE4?

Mouser has it in stock, and I can't quite tell the difference between the part numbers from the datasheet.

I have 11 of them here, tried 3 of them and I've had trouble with some of the instruments triggering. So either they aren't a good replacement, or I have a problem somewhere else in the circuit. Any thoughts?