TVC Promethius versus Bent


Any impressions on differences from this that have tried TVCs from both these companies? Also, I'm not sure why a transformer would help over of a passive resistor based attenuator (assuming a very high quality pot)assuming drive, low output impedance source, low capacitance cables, high sensitivity amp with high input impedance (100kohm). If more is less, why isn't adding a transformer just more, though minimal, distortion? Sort of two questions, but I have a high quality passive volume control, but have an interest in the TVC idea, especially these two brands or something made by Kevin Carter.
pubul57
Autoformers have been available for some time, John Chapman (BENT) and other premier passive TVC cos chose to use the S&B transformers; I have to believe there was a reason for that. Not saying the autoformers won't make great product, but it seems they were not the first choice when S&Bs were avaiable to the open market.
I will agree the S&Bs are classics. However, the Slagle autoformers by Intact Audio enjoy a pretty good if not somewhat cult like following. I learned recently that Jeffrey Jackson at Experience Music utilizes them and I have seen a couple other boutique manufacturers using them in their demo set ups at audio shows. Are they going to be as good as the S&B. Not sure, but I'd like to find out. John Chapman mentioned on his forum that if he couldn't get the new TAP to sound as good as the S&B version he wouldn't bother with it. Seems the custom wound autoformers (and John used custom S&Bs as well) are stacking up just fine.
Wired up my own TVC, using S&B mkIII's. They can be set up as autoformers, using only one side and I did try that after reading that method was better, espescially for lows. I didn't notice much difference but I can understand how it might help if impedances and voltages are less than ideal. I preferred to have the isolation and balanced input/output. You need two autoformers per channel for balanced operation. I'm pretty sure that's how the Django does it.

TVC's: It's fun to scare somebody by unplugging the ic's while music is playing. Don't try that at home, kids.
Has anyobe heard the new autoformer TAP yet? I just bought one, but I'm sure it is not the first one out there...or is it?
i own a bent tvc-based preamp. it is my reference. i have also heard the promitheus with the silver wire and silver rcas..

i prefer the bent wired with continuous cast copper and vampire wire copper female rcas over the prometheus with silver wire.