hi there i have just bought a s4 and i seem to be having a problem that when i mix a track in all the lights will flash on and off and in the headphones the volume will go up and down when this is happening i havent a clue why this is happening so hopefully someone will be able to help me out
Hi there I forgot to mention I bought it second so I checked the power supply it was a 16 volt so I have now swapped to a 9 volt and it seems to be working fine now
Having more than 9v should be fine. The S4 will only draw what it needs. If the power is too low and especially if the PSU is lower than 1.2A it will not supply the required power so the LED’s are likely to flash plus you will eventually burn the PSU out.