Top resistors


Many threads with opinions on boutique coupling capacitors, but very little consolidated information on the sonics of resistors. Anyone care to share their thoughts on the attributes of their favorite brands & types for specific tube and SS applications? How much of a difference does a good resistor make?

My interest in the topic increased after recently installing the latest Texas Components nude Vishay TX2575 in several SS and tube phono & LS components. This was a proverbial "Ah-ha" moment-- a stray resistor dropped into signal path here or there, surprising with an improvement that equalled or surpassed the impact of a switch to a top coupling cap like V-Cap or Mundorf.
dgarretson
After a month with the TX2757 in the 6C6 cathode position, including bypassing them with Black Gate Caps I decided to pull these resistors. They did not provide the richness and room filling sound that the A-B's and the older AN Tantalum did. A few weeks ago I got two of the most recent production 1k An Tants from the Hi Fi Collective.

These new Tants are more closely akin to the A-B's than to the TX2575's. They are not as sonically accurate or pure as the TX's. But they do fill the room with rich satisfying music like the A-Bs but with more detail and without the extra noise or warmth or whatever it is with the A-B carbon comps. Still running the amp without the 6C6 bypass cap.
Very interesting comments. I have tried in a DHT preamp the Audio Note, Shinkoh, Takman, Riken and Amtran resistors. They all sound different. I prefer the Shinkoh for a more realistic and natural. The metal film was more lively and open compared to the Shinkoh. Second to the Shinkoh was the Audio Note, very close but not as natural in tone or flesh sounding. I am able to switch the resistors on the fly as I built them into a rotary switch. Many people who have heard the preamp in "their" system agreed to my findings even though they did not know what resistor I was switching to. Not sure if I would get the same results in speakers or amplifiers as I have not tried this yet.

Happy Listening.
Bigkidz,

That rotary switch is great idea and thus provides instant results. Nice! I will have to try the Shinkoh's when I begin to "voice" my newly built phono pre.

It's good to keep in mind that I/all of us have different ears and listening priorities. I am voicing my amp to work with my sources and speakers in my room without a preamp.
It must be very difficult for the professional builder to voice an amp or preamp with so many variables to confront. I have been voicing my amp slowly for about a year.
Interesting comments Jetrexpro. It goes to show that longterm reactions are what matters, not quick conclusions after just a few hours. Thanks for sharing.
While my experience with Vishays is limited to the regular series, both nude and otherwise, I have to say your comments are very similar to my reactions. Vishays can sound too cool, lacking in warmth and emotion. IMO, they have their place but need to be used sparingly. For instance, I only have one in my system right now---as the grid stopper on the input tube for my SE amps. It works great there and helps to offset a tendency towards excess warmth.
Salectric,

I put the Tants on my cap burner for two weeks before installing into the amp circuit but even after that, their sound has been changing over the past four days. Last night they were starting to sound luxurious and rich but still maintaining detail and without that crispy upper mid/hi frequency etch of the older Tants.

More later.