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.
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.