George,
First of all, Perla’s new preamp has both active and passive inputs.
Considering I own it I SHOULD KNOW.
Please show us a link?
Sorry, you need to look at what the manufacture says you own, it has a cd input and two auxiliary inputs, there are no active inputs.
The only reason it’s powered is because it needs power for the volume control motor and for the remote control receiver circuit and for the blue light on the front.
https://www.perlaaudio.com/pre-amplifiers
Secondly as you put it, it’s the T+A Dac 8 that I mentioned about Vishay and Melf. As many manufacturers make Melf resistors as it stands for "Metal Electrode Leadless Face" This had nothing to do with your Perla passive preamp and what resistors are in it.
Cheers George