Tubes to look for?

[BuzzK]

I have an opportunity to go through several boxes of surplus NOS tubes.

I'm sure someone has compiled a list of useful ones for audio & HiFi.

Does anyone have anything that they would care to share?

Thanks in advance,

Buzz

 

[hunter00]

look for anything labled Mullard/Telefunken/Tunsol/Dynaco ect ect
60's era Mullards/Telefunken preamp tubes ...12ax7/12au7/and rectifier tubes gz34 ect bring top bucks,also 7199's are getting up there
Any Tungsol 6550's you find i'll take for my advise..lol

hunter

 

[x3workshop]

Here's a short list of NOS types that are sought after:

LARGE TUBES

6L6G/GB/GC
6550
EL34
EL37
EL84/6BQ5
KT66
7581A
KT77
KT88
6V6G/GT/ETC
300B
2A3
7199
7591A
5AR4
845
274/A OR B
5U4G/GA/GB
5Y3

MEDIUM TUBES

6SL7
6SN7


SMALL TUBES

12AX7/A
7025
12AU7/A
5814
5751
6DJ8
6922
12BH7A
12BY7A

Off the top of my head. I'm sure others will chime in.

 

[kirkendoll]

More small

6973
7247
12dw7
8bq5

Medium
7868

 

[mroboto]

12AT7 / ECC81 / 6201 /ECC801S
EF86
50EH5

 

[x3workshop]

If it looks like there are a substantial number of NOS tubes listed above, I would make a deal for the whole lot. Odds are you won't lose any money and you may overlook something more valuable otherwise. My 2 cents

 

[toxcrusadr]

We've had threads on this over the years, but searching is iffy right now because of the changeover. We should probably Sticky some of those threads that have these lists. There's even one all about Compactrons.

 

[s-petersen]

7027
8417
6CA7

 

[rogerh113]

805 - a really big tube

 

[electronjohn]

6JB6
6JE6
6LQ6
6JM6
Just a sample of what are known as "sweep tubes"...horizontal output tubes used in old tube-type color TVs. They're "Compactrons"...all-glass with a multi-pin base. Pretty much any similar tube with a large internal structure and a plate cap is gonna be worth some $$$...even those with odd filament voltages like a 31JS6 or similar. There's even some fat little guys without a plate cap. Very popular in the ham community as many older transceivers used them as final amplifiers....also used in some pretty potent audio amplifiers as well

 

[soundmotor]

If you are able to do it, take several hirez pics of the lot showing as many part numbers as possible. Then post the pics here. It won't take more detail than that for someone here to tell if they are worth pursuing. If the lot looks good, the next thing to check is if the tubes are new or pulls. New boxes do not guarantee new tubes inside especially if they came from a service facility. Marginal tubes were often kept "just in case". Hopefully the lot will be better than the ones I've seen over the last year which were mainly TV & RF with little audio.

 

[truep]

5965 is a geat 9 pin dual triode.

 

[toxcrusadr]

Also, if you should see the really old balloon or Coke-bottle tubes with bakelite bases and 4,5 or 6 pins, they may not be hot tubes for audio but the antique radio crowd will want them. So hang onto those.

 

[buglegirl]

Jon,

Sent you something via off forum mail.

Frannie

 

[rustnrot]

Recently I came across some tubes, many NOS. I made an offer for the entire lot. About 500 tubes. Most were worthless but not until I started typing in numbers to find out values did I learn how much some 6386 tubes I found were worth. Not a hifi tube but sought after for old compressors or the ilk.

 

[chinacave]

We've had threads on this over the years, but searching is iffy right now because of the changeover. We should probably Sticky some of those threads that have these lists. There's even one all about Compactrons.

Second the sticky notion!

 

[buglegirl]

Second the sticky notion!

We already have about 1/2 as much stickies as posts on a page.

Something less is actually needed.

Frannie

 

[Sam Cogley]

We already have about 1/2 as much stickies as posts on a page.

Something less is actually needed.

Frannie

A catch-all "read this first" sticky thread, containing links and brief synopses of other threads worthy of "sticky" status, would work.

 

[mroboto]

My Sansui TU-70 tube tuner uses those, some are pretty odd and not anymore produced.

They are more tuner tubes than audio tubes i think.

3* 6AQ8 / ECC85
2* 6AU6 / 6AU6A / EF94
3* 6BA6 / EF93 / 6K4P
1* 6BE6
1* 6BL8 / ECF80
2* 6CW4 Nuvistors

 

[chinacave]

We already have about 1/2 as much stickies as posts on a page.

Something less is actually needed.

Frannie

A catch-all "read this first" sticky thread, containing links and brief synopses of other threads worthy of "sticky" status, would work.

Frannie - good point on the clutter issue; I like Sam's idea - its a question that seems to come up regularly, one of I would think, broad interest, and would be a collection of info that so far as I have found other than spending a lot of time reading and absorbing many tube numbers, unavailable elsewhere. A possible great use of the collective AK knowledge base...

Just don't bring the list to any honey hole I might find!