Give Kevin a call, at Upscale. No one will be able to offer better advice, regarding which will yield the most, and what tubes will best provide your favorite aural flavor. (https://www.upscaleaudio.com/pages/contact-us)
12au7 or 12ax7
I recently purchased my first tube amp a Primaluna Prolouge 5, the previous owner said the tubes were at the end of their life. I replaced the factory KT-88's with Tung-Sol KT-120' with which I am very pleased. My questions is which would give me the biggest sonic benefit replacing the 12au7 or the 12ax7? Both will be replaced in time which do you think I should do first?
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Both will make a difference but I think the most noticeable will be the pre amp tubes. But before you change anything get used to the KT120 sound first and from there decide what if anything you want to change in the sound. For me all different manufacturers tubes have a sonic signature meaning all AU/AX tubes sound different. Brent Jessee lists some of the differences but it in the end will vary a bit depending with the topology used for the different amps. http://www.audiotubes.com/12au7.htm Good Luck |
- 11 posts total