[Mischmaschine9000]

Hi,
I built seven Kits of the 566-2 over the last days and all of them had c19 (1u) missing. Every kit had a 100n left, so i put that in there and it seems to work. Is that a new revision or do i need a 1u for c19?

When listening to the pres as well as measuring they seem quite dark. There is a -3db shelf in the highend, is that normal? The 566-2 i built a few months ago has the same frequency response. 

Best regards 
Mathias 

[JPK]

The C19 value of 100n is correct. It only needs to be changed to 1u if the clip LED doesn't turn off when there is no signal.

There is a -3db shelf in the highend, is that normal?
No it is not normal. the -3dB attenuation should be above 40kHz.
How did you measure it?
Check C10: 22pF, marking: 220