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Hum...ZYX with Tom Evans Groove Need suggestions

Hi all, I need help with with hum I'm getting from my ZYX Airy 3 and Tom Evans Groove combo. Never had hum issues before with a number of other phono's I've had. The hum is louder on the left side than right, and if the Groove didn't sound so good I would've gotten rid of it. Thanks in advanced.
128x128scar972
scar972's avatar
scar972 OP
225 posts
 
I did get the hum resolved today!!!
Moved the amps away from the Groove, the hum remained. So I moved the preamp further away from the Groove by switching places with the CD player on the rack. The system is much quieter now...the Groove is not the most quiet of phono's I've had but it does sound fantastic.
The hum was from the preamp power supply being too close.
Thanks all!
g_m_c
443 posts
 
that is great. congratulations. i wonder what generation Lithos power filtering you have in your unit. you can email tom evans with the serial number and he can tell you.
drw50
8 posts
 
Any Groove phono stage with a serial # after around 150 has the latest Lithos 7 filtering. Any before this uses the Lithos 6. Tom doesn't give info on what the exact specific serial number cut off point is when this change took place.
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