Gator aid. Or how to get the most from your Gator.

[Gints]

Your amp is shorting out its input when it is off, which is affecting the direct audio path from DAC to amp.
In the variable output path there is a buffer stage that splits between amp and headphone. That one is disconnected from the amp when the headphone is plugged in. So use the variable output if your amp is exhibiting this problem.

On my next DACs I shall remove the option of having a fixed and variable output at the same time, and fall in line with the other DAC manufacturers.

One amp responded well when was switched on, other did change nothing. But I read all thread and saw that others also had the same problems, so it is nothing unique. Looks that I need to use my amp with variable output. I does distort on variable output too, a bit less and only close to max volume on dac. Probably there is somehow involved gain.
If somebody interested amp is Miniwatt N3, input sensitivity 500mV, input impedance 50Kohms, song was Katie Melua I cried for you, around 1min.