WiiM pro plus vrms question

[Claudius]

I'm using a Pro Plus analog output to a Naim Nac 62 preamp. Line input on this preamp is rated at 75mV, 47k ohms. I wonder if I should change WiiM's output level set by default at 2vrms?

 

[canard]

weird... it seems to me that it would be more typically a 750mv or 0.775v, 75mv is an error? ... but clearly, use the fixed 800mv or 500mv output of the wiim... observe the level where you navigate at the potentiometer... prefer a rated level wiim or not at the start of the track, this is the place where the potentiometers of this type are the least balanced

 

[Claudius]

Reference to owner's manual: https://di-marco.net/docs/pdf/naim_nait2_62_32-5.pdf

I've already tried but I only see a difference in sound level. My question was more from an electrical point of view: what setting is best suited to this preamp (if any)? I also don't use fixed level as I like the remote option of the WiiM...