2. amps-preamps
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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
pubul57 OP
3,712 posts
 
Well, I'm still impressed and I find that it is actually a better match with my Music Reference RM9 MKIIs which are running EL34s, while I slightly prefer CAT JL2 with the Joule pre - the CAT is ultra transaparent on its own. I think the "musicality" of EL34s are better matched with the TVC - a great combination. Don't get me wrong, I'm splitting hairs to some extent as all these pieces sound good in any combination.
gmood1
1,251 posts
 
Very cool! glad to see you enjoying the TVC.Have you tried putting the pot in a box back in the system yet?
pubul57 OP
3,712 posts
 
I tried it with the CAT and thought it worked extremely well; the fact that it cost $135 has to make you scratch your head. I order a aluminum case version which I beleive is locked in my mail room at the moment, but will be comparing soon.
leadfeathers
11 posts
 
Pubul57, I noticed that you have the K & K for sale now. Can you tell why you're selling and what you've kept? I have a Music Reference RM-9 and have been considering a TVC to run between my Shanling CDP so I can eliminate the digital volume control of the Shanling. I'm leaning toward the Promitheus Dual Box system. Thanks.
pubul57 OP
3,712 posts
 
I'm going to be using the Joule 150 MKII which works especially well with my Merlins (and I like the way it looks) and Roger's Pot-in-a-Box for back up should a tube blow. I'm selling because I feel stupid with too much equipment on my hands. I was considering selling the Joule instead of the K&K, but I know how I am with equipment and I expect I may make a move down the road to a non-passive friendly system and regret having gotten rid of a great tube active.
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