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Tubes for Modulus 3A

I took delivery of a used Modulus 3a today. I have a Modulus 3 which will go to my second system upstairs. I am not happy with the sound of this preamp, it sounds a bit thin, not much bass. I replaced the tubes with new Sovtek 6922's, but I am still not there yet.

I don't want NOS tubes and want to keep the price low and I also don't want tubes that will die in a few months. Recommendations please? I want more bass!!!
stereo5

Showing 3 responses by tsciame

tsciame
88 posts
 
I use cryo'ed 6H23-EB's with Herbie Tube Dampers in my AI Mod3b. I also use 3 cones (points down) for isolation.

Tony
tsciame
88 posts
 
The differnce between a 3a and 3b is about 12 months of wait time. All joking aside Art made severial refinements (I would need to review the manual) but I was never able to pin him down. That being said it's a great unit.

Sorry I can't be of more help.
Tony
tsciame
88 posts
 
You should get your tubes from him... more often than not it is better IMO to go to the manufacturer.

Tony
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