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Understanding Grounding in Audio (Video)
- Thread starter amirm
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odyo
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I have an interesting problem with my Zen Dac + Zen Can stack. It has a ground noise with balanced connection and when i touch the chassis of the amp it gets louder. @amirm
I tested all the possible combinations. I get ground noise only when i connect Zen Dac and Zen Can via 4.4mm balanced cable and nothing else. In other scenarios there is no ground noise except when i only listen Zen Can without any input from the DAC, just powered on. In this case, ground noise happens only when i touch to the volume knob.
RCA connection clean, RCA+BAL connection clean. BAL only connection= ground noise. Also, whatever i do, i get coil whine type of noise when i touch to the volume knob. It disappears only when i touch to the chassis at the same time. One finger on volume knob, one finger on chassis= no coil whine.
The sound from RCA or Balanced connection leaks to other inputs as well. Let's say i connect my dac and amp via RCA cables and i choose the 3.5mm or Balanced input of the amp, i hear the music through these inputs at high gain/volume knob positions. The sound leaks from RCA to 3.5mm+4.4mm BAL input and vice versa.
I find this interesting. Any insight what is going on ?
I tested all the possible combinations. I get ground noise only when i connect Zen Dac and Zen Can via 4.4mm balanced cable and nothing else. In other scenarios there is no ground noise except when i only listen Zen Can without any input from the DAC, just powered on. In this case, ground noise happens only when i touch to the volume knob.
RCA connection clean, RCA+BAL connection clean. BAL only connection= ground noise. Also, whatever i do, i get coil whine type of noise when i touch to the volume knob. It disappears only when i touch to the chassis at the same time. One finger on volume knob, one finger on chassis= no coil whine.
The sound from RCA or Balanced connection leaks to other inputs as well. Let's say i connect my dac and amp via RCA cables and i choose the 3.5mm or Balanced input of the amp, i hear the music through these inputs at high gain/volume knob positions. The sound leaks from RCA to 3.5mm+4.4mm BAL input and vice versa.
I find this interesting. Any insight what is going on ?
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