The referenced statement is a story from the past, you shouldn't bother about it.So if using fixed volume you say it’s best to turn off the eq? Does this still stand if I’m using the DAC in my amp and not inside the WiiM Pro?
All you should care here is to provide enough headroom when you use GEQ, especially with positive gains on the selected bands. In such scenarios you should avoid the fixed volume to be able to reduce it manually for the compensation.