Pedal board PSU leads

[deeaa*]

I don't think 220 or 230 makes any difference. They've slowly risen the voltage here it seems...used to be everything was 220, these days I only see 230 labels everywhere. Ten volts makes not a lot of difference to a transformer...but the frequency must be correct (50).

[DeanEVO_Dude]

...but the frequency must be correct (50).

Just to make a little correction, the Frequency only matters with devices that use the 50Hz/cps or the 60Hz/cps for timing, frequency, or speed. It does not matter if the device is just converting voltage from AC to DC. So for a power adaptor for pedals won't care what the frequency is, just that the voltage is correct (the pedals don't care either, they run on DC voltage, so there is no frequency).

For example, an Amp does not care what the frequency of the power it is plugged into is, it only cares if the voltage is correct. A clock, however, does care what the frequency is, because it uses it to maintain the correct speed (it also cares that the voltage is correct as well).

[Ch0jin]

Just to make a little correction, the Frequency only matters with devices that use the 50Hz/cps or the 60Hz/cps for timing, frequency, or speed........

Spot on (pun intended.......) haha

Also

As I mentioned reversing the polarity may just put the line voltage straight to chassis/earth .

Something I found out through my own total stupidity a couple of days ago and posted HERE as a warning