First off I have a different preamp and power amps, however I’ve tried a large portion of that list. I recommend that you look at the 12AU7 description page at Brent Jesse’s web site. I did find my profound like for Tekefunkens in one of my amps didn’t carry over to a different brand. I find that list interesting based on where the smooth plate Tekefunken is Vs the ribbed plate version. One tube not on your list is the nickel plate Seimens and they are bright. Also a very desirable tube that I don’t have is the Mazda nickel plate. I’ve personally only tried the basic Mullard and I didn’t care for it at all. It was like throwing a blanket over my speakers. I’m sure that someone that has the same product will come in and that’s what you’ve asked for and that’s important. Maybe also contact LTA and Andy at Vintage Tube. I wish you the best and if you loose control, join me at Tube Addicts Anonymous . 😆 Cheers, Mike B.
LTA Ultralinear 12AU7’s
Saw an agon post with a 12AU7 chart. There are 4 12AU7’s in the LTA UL amp. Any experimenters with recommendations or thoughts? Thanks
High Resolution / Clear
Detailed / High-End Extension
- 12AU7A RCA clear top
- ECC82=12AU7 Siemens
- 5184A Siemens long plates & triple mica
- 12AU7 Telefunken ribbed plate
- 12AU7 Tungsol
- 12AU7A Sylvania
Lively 3D Mid-range / Good Bass
Mid-range Vocals More Pronounced
Sweet Highs
- 12AU7 Amperex Bugle Boy Holland
- 12AU7 Philips Holland
- 12AU7 Philips Miniwatt Holland
Warm / Smooth / Rich
- 7316 Amperex Holland or
Philips Miniwatt Holland 1959-1963 - 12AU7 RCA Black Plates 1950's (very rich and creamy)
- 12AU7 Mullard (great midrange, good bass)
- 12AU7 Ediswan by Brimar (quiet, detailed, smooth, nice)
- 12AU7 Brimar 1960's
- CV4003 Brimar (very relaxed, quiet, balanced)
Detailed / Articulate / Warm
- 12AU7 Mullard long plates 1950's-60's (best mids, best tonality, best with vocals and instruments)
- CV4003 Mullard Box Plates 1960's
- 12AU7 Telefunken smooth plates
- 12AU7 GE early 1960's
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