I am having an issue when using the phono input on my new WiiM Ultra. No matter how I connect my turntable there is a persistent buzzing/humming noise.
Do not believe it is a problem with the turntable or RCA with ground cable, as when I connect though my old preamp and use the line in input on the ultra instead it disappears completely. I ensured my cartridge is moving magnet and the correct setting is selected.
Also confident it is not a ground issue: I even tried having the RCA cables plugged in to the old preamp (then to ultra line in) and the ground portion to the ultra ground, that came out perfectly silent. However, doing vice-versa (ultra phono input and old preamp ground) the buzzing/humming comes back.
Incredibly frustrated as one of the main reasons I spent more for the ultra was for the phono input and eliminate the old preamp from my setup, any help will be greatly appreciated![Folded hands :pray: 🙏](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f64f.png)
Do not believe it is a problem with the turntable or RCA with ground cable, as when I connect though my old preamp and use the line in input on the ultra instead it disappears completely. I ensured my cartridge is moving magnet and the correct setting is selected.
Also confident it is not a ground issue: I even tried having the RCA cables plugged in to the old preamp (then to ultra line in) and the ground portion to the ultra ground, that came out perfectly silent. However, doing vice-versa (ultra phono input and old preamp ground) the buzzing/humming comes back.
Incredibly frustrated as one of the main reasons I spent more for the ultra was for the phono input and eliminate the old preamp from my setup, any help will be greatly appreciated
![Folded hands :pray: 🙏](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f64f.png)