@mitch2 Sounds like you have 1 too many on your hands.....just saying :)
Earlier this year, I owned the icOn 4PRO AVC balanced passive preamplifier that uses four Slagle autoformer volume control modules. It was seductive in how the music was presented with the warmth described by @ozzy62 coming from a dead quiet background. I really enjoyed listening to it, and the Django TVC, if at all similar, may be just the thing for you. Ultimately, I slightly preferred my Khozmo volume control/SMc Audio TLC Signature Buffer slightly better, so I sold the icOn AVC unit.
I have not spoken with Arek since earlier this year and I am a bit surprised to hear he would recommend the AMRT resistors over the AMRG version. Both are carbon film but the AMRG appears to be Amtrans Corp’s more upscale version based on their higher pricing, gold-plated OFC lead wire, and description as "High-end carbon resistor." The AMRG resistors sound better to me than the Takman REY metal film resisters I had in an earlier Khozmo passive volume control. I have not heard the Takman REX or AMRT resistors. I suggest doing some research and talking with Arek before deciding on resistors.
In a different thread you asked about Hattor's Tube Active Stage and I said I would answer here in this current thread. I have cut/pasted and slightly edited portions of a couple of my previous posts that I believe will answer your questions about the Tube Active Stage:
Tube Active Stage
and, more thoughts...
Hello everyone... I have very little experience with passive preamps... I only had a Promitheus whose sound was good but the built quality was mediocre... (RCA jacks were too small)... recently I started a conversation on audiogon in order to find a preamp that would be a good match for a GaN-Fet amp... I wonder if a passive preamp would be a good match with such an amp... anyone has experienced this combination ?