Best 12AU7?

What is the best 12AU7 or equivalent? NOS or new production. I like brighter sonics with good treble air. Thanks!

olds1959special06-20-2024 10:29pm

pindac Details Discussions Posts This discussion Message User 3,996 posts 12-29-2025 at 07:58am Copy Comment URL Report Comment Edit Delete When Investigating 12AU7 Valves, the following is discovered! ______________________________________________________ All 12AU7 tubes are rated Vhk=200V All 5814A tubes are rated Vhk=100V. Careful when substituting. ________________________________________________________ Earlier references made to the 5841A, does not point out there is a Voltage Difference that could negatively impact on a Circuit.
jmac7 Details Discussions Posts This discussion Message User 62 posts 01-10-2026 at 12:56am Copy Comment URL Report Comment Edit Delete + 1 Vintage Tube Services
nogaps Details Discussions Posts This discussion Message User 171 posts 01-10-2026 at 08:54pm Copy Comment URL Report Comment Edit Delete Didn’t see them listed, but for a new production tube..Ray Selects (as mentioned previously, 'best" is system dependent)