Tube selection 12AT7 and 12AX7 - preamp

Sharing results of my internet reading..

This is all based on current production, no NOS or used tubes.

Best 12AX7. JJ ECC803S Gold pin

Best 12AT7 JJ ECC81 gold pin or Mullard new.

Should I select, 1. Balanced? $2 per tube 2. High Gain? $2 per tube 3. Low Noice/Microphonics $4 per tube? as offered by Tube Deport?

Any comments?

dcaudio12-09-2024 12:05pm

dekay Details Discussions Posts This discussion Message User 5,702 posts 12-10-2024 at 07:39pm Copy Comment URL Report Comment Edit Delete Look @ Brent Jessee. You can purchase old USA production 12ax7’s for $50/each and old USA production 12at7’s for $20/each. Look specifically @ those selected for organ use as they were screened for noise. The JJ’s with options (balanced/low noise) will run approx. $40/each. I assume that these are for your Nagra/CJ preamps. DeKay