Kondo Overture PM2i - buzzing noise from transformer

@rsf507 Thanks, please explain what is the "can" (I am not native english).

Thank you :)

@roxy54 🤣 perfect 👌

Thanks vinylvalet. Bolts are tight. Tried different AC lines - at home, at company, without HMS DC filter, with HMS DC filter. Buzzing all the time. Mavbe I am t sensible concerning side noises.. 

Thanks astolfor, I had an intensive and very helpful communication with Kondo Team in the meantime and we did several measurements with a certain app to measure noise in dB. Laying the iPhone on the buzzing transformer on my and their Overture made things clear. My Overture produced even 6.6 dB less noise (32,6 dB) than their 39.2 dB. So I guess my ears are just too sensitive.

Hi chayro, well Kondo sent me a photo with the iphone and "NIOSH SLM" app positioned on top of the transformer of their reference Overture amp showing 39.2 dB. I used the same app with same app settings and mine was even quieter at 32.6 dB. Now what does that mean..?

Yeah, you are right. I will try to trade in to the Overture to replace it with the Melius power amp. 

Well yeah, they were very helpful but in the end, their and also my conclusion was, that because the measured buzz/hum noise is within their specification and even lower than the buzz of their reference Overture in factory. The CEO himself took care of measuring and provided a photo of measured result. The buzz is supposed to be normal. For me the solution is to sell the amp or to but it in a sideboard with enough ventilation to reduce or eliminate buzz at listening position at very low volume. I must add, that my listening room is very quiet at 26 dB noise level. iPhone put directly on transformer resulted in 32,6 dB and at listening position there was measured only 1 dB higher noise level 🤷🏼‍♂️. 

Dealer in Greece/Athens