7.Keep large amplifiers and hefty receivers away from other components. Power amps often emit a hum field than can be picked up and amplified by sensitive devices such as turntables and tape decks. Sometimes a few inches of vertical distance is all that is needed to minimize the hum. The rationale is simple. Electrical controls that are not used become dirty.
Dirty controls can introduce electronic distortion.
Even if you don't use certain controls, press their buttons and twist their knobs once a month to keep them clean. 9.Use a disc clamp when you play your LP records. Clamps come in two varieties. Because this kind of clamp adds very little weight to the record, it can't upset the balance of the record player. The other variety is a round weight.