22-Dec-2015, 00:00
It's interesting that the crosstalk can be suppressed by a firmware change, as it would normally be caused by a hardware deficiency (at least in my experience) -- maybe there's a way for the firmware to reduce the effect of a possibly unused line input on the phono signal path? Or vice versa?
If there's an ADC with an unused, floating input, then its output could have been driving noise into nearby PCB traces. The firmware change could perhaps put the unused ADC output into a high-impedance state to reduce this effect. I'm speculating more than wildly here, of course...
Hopefully someone who's experienced the phono stage hiss can comment to say whether or not it's improved with this firmware release. Fingers crossed.
If there's an ADC with an unused, floating input, then its output could have been driving noise into nearby PCB traces. The firmware change could perhaps put the unused ADC output into a high-impedance state to reduce this effect. I'm speculating more than wildly here, of course...
Hopefully someone who's experienced the phono stage hiss can comment to say whether or not it's improved with this firmware release. Fingers crossed.
Roon (Mac Mini), Wilson Benesch Full Circle, Expert 1000 Pro CI, Kaiser Chiara
Warwickshire, UK