Humming on Phono Channel: Kontrol S4 Mk3

CageyBee

Hi All,

A few months ago I upgraded from a Kontrol S4 MK1 to S4 MK3 and all working well until I recently started playing vinyl through it - I can hear a hum and the VU meters are also picking it up. This is happening on both Phono channels (A & B).a

I've done the usual things of disconnecting/reconnecting all cables including the ground wire (Technics SL1210's), but it's still happening.

I need to digitize some vinyl which I can't do while this is happening, so I have had to switch back to my old MK1 (luckily I haven't sold it yet) and it's working fine with no humming, so I know it's not my laptop, power supply, cables or turntables.

Do I have a faulty unit, or is there some kind of setting that I'm missing? To switch to phono I hit SHIFT + Line/Phone buttons.

Many thanks.

alec.tron

Unfortunately, it's been an issue from the beginning, and never fixed. Units do vary (I returned 4+ of them until I settled on the one with only 2-4 bars on full gains - but it's still not acceptable imo), but they all hum - see

https://community.native-instruments.com/discussion/comment/51110#Comment_51110

https://community.native-instruments.com/discussion/comment/47972#Comment_47972

c.