WTD: pair old 12AU7

[Mr.Ian]

looking to try some different valves in my pre - have some Mullard and JJ, looking for something different 12AU7 or early 5814A. Neutral clean dynamic sounding and not much warmth. matched or close pair. Nothing super exotic though.

I have some NOS TV valves if any one is looking for swaps

[Mr.Ian]

got detracted, but still looking for a pair of 12au7 or 5814a

[Lawrence001]

I've found Jan Philips to be as you describe, but not specifically tried the ECC82/5814.

[Firebottle]

I have some Belvu 12AU7's.
What TV valves do you have? Any PCC88, PCC85?

[studiohertz]

Hi
I've got philips minwatt ecc82 if You interested and also Amperex bugle boys but they are little warm sounding tubes in my system.

[Mr.Ian]

Brimar CV2492 1 NOS
Brimar ECC83 2 NOS
GEC A2900 1
GEC KT66 1 NOS
Marconi U52 1
Mazda ECC81 2 NOS
Mazda ECC83 1 NOS
Mullard E88CC 3 NOS
Mullard ECC83 1 USED
Mullard GZ37 3 NOS
Marconi U52 1 USED
Motorola 7551 3 NOS
Brimar 12AT7 2 NOS
Motorola 12BY7A 2 NOS
United 3A5 7 NOS
Motorola 65-83335A02 2 NOS
Brimar 6AM5 1
Mullard 6AS6 1
Brimar 6AT6 4
Brimar 6AV6 3
Brimar 6BH6 3
Brimar 6BJ6 6
Heward Packard 6CB6 3
Mullard 6CB6 3
Brimar 6V6GT 8 NOS
Mullard EL38 4 NOS
RST EL38 3 NOS
GEC GXU50 2 NOS

when I last listed - plus some unsorted loose ones. to be honest the orginal plan was to keep them - you never know when they might be of use. Some of the HiFi related ones have been tested, but all those tested showed new or as good as.

[Mr.Ian]

nothing warm, I am trying to go the opposite way. it has Mullards in at present and its too soft and wooly for me

[da2222]

siemens & halske e82cc 1960s should meet your requirements exactly...pm me if interested

[Mr.Ian]

[QUOTE=da2222;953429]siemens & halske e82cc 1960s should meet your requirements exactly...pm me if interested[/QUOTE

sound wise probably yes but price wise these will be out of my league, I think these will be 10X what I was hoping to pay

[Mr.Ian]

[QUOTE=da2222;953429]siemens & halske e82cc 1960s should meet your requirements exactly...pm me if interested[/QUOTE

sound wise probably yes but price wise these will be out of my league, I think these will be 10X what I was hoping to pay

[vintagesteve]

If the sound is "woolly", then personally I'd say that there's issues elsewhere, either in your amp or the rest of the system as Mullard valves are about as good as you can get fidelity wise. What I'm saying is, you may be choosing an 'inferior valve' to get the more clinical or brighter sound that it appears you are looking for. Just my thoughts as someone who has used valves in Quad amps and also many, many valve guitar amplifiers where you drive them into overload. The distortion pattern of an overloaded Mullard valve is sweet and rich in harmonics, whereas the distortion pattern in many, many foreign, newly made valves is coarse, gritty and discordant. I realise that has little or nothing to do with what you are doing, but it is a good indicator of how good NOS Mullard valves are. Just my view.

[Mr.Ian]

If the sound is "woolly", then personally I'd say that there's issues elsewhere, either in your amp or the rest of the system as Mullard valves are about as good as you can get fidelity wise. What I'm saying is, you may be choosing an 'inferior valve' to get the more clinical or brighter sound that it appears you are looking for. Just my thoughts as someone who has used valves in Quad amps and also many, many valve guitar amplifiers where you drive them into overload. The distortion pattern of an overloaded Mullard valve is sweet and rich in harmonics, whereas the distortion pattern in many, many foreign, newly made valves is coarse, gritty and discordant. I realise that has little or nothing to do with what you are doing, but it is a good indicator of how good NOS Mullard valves are. Just my view.

I go along with this totally - 100%. Its probably not woolly per sey just that I want to try to get closer to that that coarser, gritty sound even though its probably not true to the music. :mental:

[baitrunner]

I have " x Rca Jrc5814wa orange print nos tubes (cheap). Pm if interested. Lew

[Mr.Ian]

I'm going to try these 5814s, see how I get on sound and current draw wise

[argyle]

I've just dug these out, 4 X Penta Labs and 2 X Golden Dragons. I won't use them, let me know if you are interested.

https://s20.postimg.org/76p6ulmxp/IMG_20180304_164627.jpg

[droom]

22910Tung-Sol JTL-12AU7 that have D-shaped square getters and were manufactured in the U.S. during the 1950s. 2 matched pieces that are NOS and test as new and well within original specification. £55 delivered