Multicolour Valve Swapshop...

nut

Wammer
Wammer
Oct 26, 2014
1,892
125
98
Eton wick, berkshire
AKA
Phil
HiFi Trade?
  1. No
I can't find a schematic for it Phil, so it's guesswork. However, it's likely that all four are going to matter. It's a preamp, so one or two may be buffers, but they won't be phase splitters or similar and will all be in the signal path.

The Philips shouldn't be at all bad. There will be better, but I'm loath to suggest trying, because it could quickly turn into a moneypit if you need four.

I do have some pairs, but apart from CV4003s the rest may possibly not be better than the 5963s. And the CV4003s go for silly money. IME the CV4003 (the KQDD marked type) and Mullard M8136 are the best of the 12AU7 varieties, but the prices don't match the improvement frankly.
I think you are right.
4 Expensive mullards will end up costing more than the pre.
I think i will look for another flavor of 5963 for a play.
And always nice to have a backup set.
Thanks for looking though.
 

Jazid

Wammer
Wammer Plus
Oct 13, 2009
4,469
1,066
193
London
AKA
James
HiFi Trade?
  1. No
In a rose rv23.
Though it currently has 4 jan Philips green print 5963, which might be quite good.
Darn minefield.
I've got a perfect matched sections and pair of Sylvania 5814a Gold Brand, gold pin, measure as new if you are interested? They'll be pricey - sufficiently rare that I can't find any that have been for sale lately on the fleabay. I also have a pair of standard grey ladder plate Sylvania 12AU7s which are nicely matched and closer to sensible money. There are some RCA cleartop 1960's vintage 12AU7 marked 'Ten', also very nice and matched sections and pair, some GE 5 star double mica, GE ordinary triple mica, and God knows what else - loads of Mullards. PM if interested?
 

nut

Wammer
Wammer
Oct 26, 2014
1,892
125
98
Eton wick, berkshire
AKA
Phil
HiFi Trade?
  1. No
I've got a perfect matched sections and pair of Sylvania 5814a Gold Brand, gold pin, measure as new if you are interested? They'll be pricey - sufficiently rare that I can't find any that have been for sale lately on the fleabay. I also have a pair of standard grey ladder plate Sylvania 12AU7s which are nicely matched and closer to sensible money. There are some RCA cleartop 1960's vintage 12AU7 marked 'Ten', also very nice and matched sections and pair, some GE 5 star double mica, GE ordinary triple mica, and God knows what else - loads of Mullards. PM if interested?
Thanks for tbat.
I think i'm going to try and find some rca 5963 black plates.
 

pmcuk

Wammer
Wammer
Sep 12, 2015
2,324
1
2,330
148
Kensington, London
HiFi Trade?
  1. No
I have quite a few E80CC which are a very nice valve and sometimes used in place of a 12AU7. More heater current though, and I don't know if it fits your operating point.
 

stylesound

Wammer
Wammer
Dec 30, 2009
337
163
58
Kendal, Cumbria ,
AKA
Mike
Just quickly taken a couple of photos of most of my EL34 valves. The first shows all Mullard types (xf1, xf2, xf3, xf4, CV type xf3).
The second shows miscellaneous makes including Amperex, JJ, Svetlana, Sovtek, Westinghouse, Pinnacle, Zaerix and some made by Mullard but badged Tungsram and Brimar.
 

Attachments

  • P1020184.JPG
    P1020184.JPG
    2.5 MB · Views: 32
  • P1020182.JPG
    P1020182.JPG
    3.2 MB · Views: 32
  • Like
Reactions: martiansunrise

Lokes

Wammer
Wammer
Jan 15, 2010
1,869
125
108
Pontypridd
AKA
Aardvark
HiFi Trade?
  1. No
A Quad of NOS Tungsram ECL86
Labelled for Pinnacle
All test as expected
£140 plus postage.
 

Attachments

  • 20221028_163421.jpg
    20221028_163421.jpg
    719.7 KB · Views: 2
  • 20221028_163017.jpg
    20221028_163017.jpg
    737.2 KB · Views: 2
  • 20221028_162929.jpg
    20221028_162929.jpg
    1 MB · Views: 4
  • 20221028_162859.jpg
    20221028_162859.jpg
    1.1 MB · Views: 5
  • 20221028_162755.jpg
    20221028_162755.jpg
    356.8 KB · Views: 5

mikeyb

Wammer
Wammer
Dec 10, 2013
1,668
313
103
Fife, Scotland
AKA
Mike
HiFi Trade?
  1. No
I have approx 40no good used original Mullard EL34s all of which have been tested on an AVO IV. PM me if of interest
Sorry I haven't replied I didn't receive a notification that there had been an update on the thread.

I'll pm later when I've had a chance to read up on your list 😊
 

nut

Wammer
Wammer
Oct 26, 2014
1,892
125
98
Eton wick, berkshire
AKA
Phil
HiFi Trade?
  1. No
Matched pair nos testing RCA 5963 black plate foil getter 1957. About as good as it gets for 5963 i believe. £55 posted
 

pmcuk

Wammer
Wammer
Sep 12, 2015
2,324
1
2,330
148
Kensington, London
HiFi Trade?
  1. No
Sorting out a few valves for sale, all tested good or nearly new
ECC99 - £16 new in box
12AT7 / 6201 - £12
6ZH1-EV (6J1) £3.50 each, have several, new
5654 - £5
6N1P - have several £4.50
6J32P = EF86 - £5 each, have a pair, new
12B4A - £7.50 each, have a pair
7A4 - have 3 at £4.50 each
14N7 - have a pair at £6.50 each
7AF7 - have a pair at £8 each
1626 - have several at £14 each
5670 - £6
MH4 - have a few at £18 each
E80CC - have a few Tungsram matched pairs at £32 a pair.
 

Disarmamant

Certified foo free
Wammer
Mar 30, 2013
607
80
43
Brackley, Northants
AKA
Martin
HiFi Trade?
  1. No
I’m looking for some 6V6GT’s, and/or the Russian version 6P6S, if anyone has any they’d like to move on.

Straight purchase or swaps, trades for anything you might be looking for in my valve stash. 😊

Thanks.
 

bernie

Wammer
Wammer
Mar 6, 2007
175
1
33
Alton United Kingdom
AKA
Bernie
2 x Sylvania JAN USA 5Z3 Valves USA manufactured 1944. 5Z3 Still boxed. These were new old stock until I bought them and I have only put 20 hours on them

£15.00 each + postage





 

Forum statistics

Threads
109,296
Messages
2,317,080
Members
69,448
Latest member
per gunnar