2. amps-preamps
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Recommended tubes for LTA Preamp

Hi All - 

I recently upgraded my LTA Microzotl preamp to the Level 2. I see myself having this component for a long time and don’t anticipate ever wanting to replace it. 

I’m planning on purchasing some back-up tubes for it, though. I was wondering if any LTA preamp owners out there wouldn’t mind sharing their experience with different NOS tubes for the LTA.  LTA currently has Brimar and GE NOS tubes in stock, but wanted to see if anyone might share their own experiences tube rolling with the LTA preamp. 
 

Thanks in advance! 

128x128bluethinker
sls883
395 posts
 

My favorite are NOS Telefunken ECC801S diamond bottom made in Germany. I also like NOS Siemens ECC801S.  The Telefunken are pretty pricey. 

I like the Brimar Yellow T 6060 12AT7. They have them in stock at The Tube Store. The Brimar are warmer and slightly less detailed than the Telefunken and Siemens.

If you are looking for a brighter more detailed sound, I'd get one of the first two. If your system is already bright, I'd try the Brimar. 

That's been my experience, anyway. 

 

wjob
64 posts
 

Siemens 12AU7 NOS are a nice improvement in clarity over the stock tubes.  Lowers the gain a bit as well, which is helpful unless you are running LTA amps.

dz13
253 posts
 

When I had an LTA integrated with a preamp section, I contacted Brent Jessee at tubes.com for his recommendation.  I told him sort of what sound I was looking for and he gave me great advice. 

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