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Inspire by Dennis Had Enjoying Vacuum Tube Audio

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  #5391  
Old 08-17-2019, 02:51 PM
bing! bing! is offline
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For whatever reason, my phono stage, when set to MC/HIGH gain has a hum with the Inspire LP3A. Not so with my Jolida Fusion Pre, and not so when I change the gain to LOW.


It would be a shame to forego my Dynavector 20x2 low just because the Pre can't handle such high gain.
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  #5392  
Old 08-17-2019, 09:39 PM
Bombadil Bombadil is offline
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It has a hum both with and without being connected to your turntable?
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Old 08-18-2019, 01:37 PM
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^^^ yes. Without without the turntable. I even changed the cartridge, with the same result.

The only thing that I can isolate for the hum is the phono stage output gain. The hum is not present with another preamp. I wonder if there is an impedance issue?
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  #5394  
Old 08-19-2019, 01:13 PM
bearcity bearcity is online now
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Best to contact Dennis. I’m sure he would know what the source is.
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