Hi

Does anyone have a couple of ECL81 tubes? Needed for my phono stage...

Hi Jon,

That seems a bit of a rare beast.
tdsl.duncanamps.com/show.php?des=ECL81

Hard to imagine anyone using it in current production. What phono stage is that?
Normally so meticulous, I assume you have the number right?

I had a quick flick through a box of oddballs to no avail, but could check some more.

I'll have a look Jon and pm you if I have any.

Have you tried Geoff Edwards?

[e-mail]

The phono stage? It's the 1963 Denon phono stage rebuild that Beeman did. I bought one. It is that stage that uses the ECL81.

Geoff Edwards? Thanks for the tip.

So I checked with a magnifying glass and a really good source of light. Hmmm... it looks more like an EZ81.

Sorry, gentle people, put this one on hold. The tube I have installed is fairly worn, so I will check again in the morning and let you know

EZ81 is a rectifier, dual diode.
What makes you think it is (they are, if two) a problem?

More detail on the exact "1963 Denon phono stage"? Model number, etc?

Cheers!

Beeman did a build thread on these, look it up, he mentions a second unit using ECC88?

Oct 7, 2021 20:30:17 GMT 12 harvey said:

Beeman did a build thread on these, look it up, he mentions a second unit using ECC88?

Why don't the interested parties look it up and provide a link?

I just thought ECLxx looked wrong in a phono stage. Now it's maybe an EZxx which makes much more sense.

Oct 7, 2021 19:44:13 GMT 12 RdM said:

EZ81 is a rectifier, dual diode.
What makes you think it is (they are, if two) a problem?

More detail on the exact "1963 Denon phono stage"? Model number, etc?

Cheers!

Tube designations go like this:

E (I think 6.3V heater, options for 12.6V)

C small signal triode

L power pentode.

So ECL82 & ECL86 were used in audio amplifiers. ECL81 would have been a very early development.

I find it hard to believe any such were used in phono stages. (ECCxx denotes dual small signal triodes in the same envelope)

Much more likely EZ81 then, Z is a rectifier. Perhaps easily available, without looking.

Off the top of my head, memory, etc.

~ Ross

Oct 7, 2021 20:40:44 GMT 12 RdM said:

Oct 7, 2021 20:30:17 GMT 12 harvey said:

Beeman did a build thread on these, look it up, he mentions a second unit using ECC88?

Why don't the interested parties look it up and provide a link?

I just thought ECLxx looked wrong in a phono stage. Now it's maybe an EZxx which makes much more sense.

Coz I use Tapatalk and wasn't sure if the link would work for those on Windows, I find the search function quite easy to use. 🙂

r.tapatalk.com/shareLink/topic?url=https%3A%2F%2Fdarklantern%2Eproboards%2Ecom%2Fthread%2F1218%2F&share_tid=1218&share_fid=1850101&share_type=t&link_source=app

OK, that actually works (on Linux here but likely on anything else too) I'm grateful to see.

Let me rephrase it:-

darklantern.proboards.com/thread/1218/

I'm cooking dinner, late, no time to look up, so thanks, I'll read it later. ;-)

Oct 7, 2021 19:31:37 GMT 12 jon said:

So I checked with a magnifying glass and a really good source of light. Hmmm... it looks more like an EZ81.

Sorry, gentle people, put this one on hold. The tube I have installed is fairly worn, so I will check again in the morning and let you know

Jon, does it look vaguely like this?

www.r-type.org/exhib/aai0030.htm

If so, then plentifully available in new production or maybe even NOS.

www.startpage.com/do/dsearch?query=EZ81

Alright, I consulted with the wife (better pair of eyes) and she agreed it is an EZ81. My bad.

I'll go and get some more from the plentiful sources out there.

Thanks, everyone, for your patience and understanding.