Thanks for the reply. It gets louder in volume when the brightness increases. I'm assuming it's down to the adapter having to work harder or under stress at full brightness. I was thinking it was probably a quality control issue. Distancing the lamp from the mains more to double check, the sound...
With this lamp I receive a low pitch buzzing sound which not that loud unless up close. It has always been this way. Is it likely to be the lamp's plug, as it's only with this device, on any socket. What is notable is that it only happens when the lamp is set to it's very brightest (it's a 16W...