2. amps-preamps
  3. 149541-88714

Let's roll: what pre-amp tubes should I consider next?

I am looking for some guidance from experienced vacuum tube amp users. I have a Unison Research S6 (most recent model) which runs six x EL34 power tubes and two x 12AX7 pre-amp tubes.

Having gone NOS in the pre-amp section, I've had great results over the new manufacture Tung Sol 12AX7s that come stock with this integrated. The tubes I've played with are the Philips Miniwatt 12AX7s and the Siemens 12AX7s. I like what both have to offer, but there are differences. The Miniwatts being warmer and contributing to an overall more subtle listening experience whereas the Siemens are more precise, producing a sound that has attack, excitement and thrill in abundance. However, I find the latter can be a bit too much in the upper mid/lower treble region some times. Is there another new manufacture (thinking Psvane?) or NOS (Brimar, Mullard, Mazda) that would give me the best of both worlds? Good tone and timbre while maintaining a sense of involvement through speed and attack?

What are your recommendations?

funcrusha


funcrusha

Showing 1 response by hwr

hwr
19 posts
 
I have extensive experience with the use of tubes. My pre-amp, phono pre-amp, cd player plus 4 different power amps all use tubes, using single ended or push-pull circuits.

I have to tell you, I have been really pleased with my Telefunken and Mullard tubes. I also use Siemens, Philips, White Westinghouse, RCA, (cleartop in particular) as well as Psvane GE, Tung-Sol, Magnavox, Rogers and Sylvania.

The argument in favor of the Mullard/Telefunken tubes really gets down to better bass and inner detail. They are also extremely quiet and expensive, but the benefits outweigh the cost.

Experiment around....have fun!!!!!

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