I have just bought a pre-assembled Shruthi-1 in the US with a 110V power supply. Can I replace this with a European power supply (230V), or do I need to use a voltage converter?
The Shruthi only cares about what the power supply puts out at the other end-sa long as it is 7.5 to 9V and at least 300mA you’ll be fine.
@pichenettes: May I suggest a new forum category at the top labeled:
FAQs - ANSWERS TO MOST COMMON QUESTIONS HERE
…containing links to the various usual pages as you’ve just done?
Martin
we cannot avoid those questions on the board (and by e-mail), hence the wiki 
It’s written on the back of the unit, you would think that was enough
Ah of course, the Wiki is what ought to be linked to when it’s ready for public airing.
Martin