mark1811
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- Jun 30, 2014
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- 47
I recently bought the Marantz PM KI ruby amplifier and noticed when plugging in a pair of Sennheiser HD 599 headphones there is some hiss and hum in the background. It doesn't matter what source I select it's the same. The hum is faint and doesn't appear to increase when volume increases.
Without the headphones is if I put my ear up to the speaker (with no music playing) I can just hear it.
I have the matching sa ruby CD player and when I plug in the headphones into its jack, no noise.
Anyone else have this amp and experienced this?
Without the headphones is if I put my ear up to the speaker (with no music playing) I can just hear it.
I have the matching sa ruby CD player and when I plug in the headphones into its jack, no noise.
Anyone else have this amp and experienced this?