Hi all respected member
I'm a long time Ifi user back in the day of Ifi Nano I-one.
I have this problem with my car set up
Source : Android Head unit running Neutron app with direct USB out (as transport only)
Connection : USB
DAC : Zen Signature V2 firmware 2.20 ( try flashing 2.30 several time with no luck )
SN : 5320001673
Gain switch set to variable
Tube buffer : Ifi Itube v.1 with buffer
Single ended RCA out to Helix Psix processor.
Both DAC and buffer using Ifi power wall wart running from 220V inverter.
Some of the FLAC file with female singer and some instrument, I reckon somewhere around 2500Hz ~3500Hz produce Awful noise. Like crackling.
This does not happened with DSD file.
When I set up the gain to fixed, it got worse, so I dial down the gain knob.
I wonder if this issue is inherent in the DAC/Architecture or my unit somewhat flawed?
Otherwise, everything else is perfect!
Many thanks before for your opinion / enlightenment
Stan
PS : the units is still in trial mode, so I don't arrange them neatly in their final position.