Tube rolling Question


Hello Tube Rollers
I recently bought my first tube preamp (Blue Circle 21.1). I've noticed I am need of new tubes as the tube whoosh is considerably more noticeable now than 6 months ago. The amp comes with  Electro-Harmonix 6sn7 tubes which I appreciate and dig the sound. I will certainly replace these with a the gold pin model as I like the sound profile. Here's my question:

What other tubes might you recommend for a different "flavor" of sound, and just to have fun with. I am a poor audio guy so please no recommendations for tubes that will cost more than preamp. 

Thanks in advance. 
128x128birdfan

Showing 3 responses by geoffkait

Synergy? Give me a break! The Ruskies won’t take umbrage at what I’m about to say because they don’t know what umbrage means. But the Ruskies don’t experiment with various brands of tubes. They just use whatever tubes are left over from the last MiG-25, The Ruskies are known for using the cheapest parts they can get and still get the thing to work. I was in the pink building with no windows. They weren’t making doughnuts 🍩  in there.
Ideally a particular amp design should be totally Tube brand independent. All 6SN7s have the same electrical characteristics. Unless you wish to ascribe Golden Ear status to the Ruskies. I will eat a bug if ANY Sylvania or RCA or Tung Sol 6SN7 doesn’t sound a lot better than ANY Soviet 6SN7.
I used the 40s Tung Sol rectifier tube with my Sylvania 6SN7 Bad Boys in the Woo Audio headphone amp with great success. I bought a matched pair of Tung Sols at no small expense just in case. Better safe than sorry. I also used two Herbies Tube Dampers per Tube, one on the glass the other on the base. Again, better safe than sorry.