5) would be to make sure phono amp section is well isolated from any nearby external EM fields, such as those created by motors or transformers in nearby appliances, electrical cables, etc. Low level analog phono signals, devices, ICs are especially sensitive to hum/noise caused by EM fields
6) Of course, a good electrical ground is also critical to avoid/eliminate any hum
Get these ingredients right and hi fi phono sound can be a really special treat.
6) Of course, a good electrical ground is also critical to avoid/eliminate any hum
Get these ingredients right and hi fi phono sound can be a really special treat.

