Chokes for tube amps for sale.
I have a wide range of filter chokes for sale from only millihenrys up to
many Henrys.
Some are E&I, some have C-cores. Some
are good for power supplies where a
CLC filter or LC filter is to be used. Very few are suitable for between a B+ rail and
a triode anode in what is called "choke feed" in a gain stage of an amp.

The majority of inquiries I get are from people without any technical knowledge and
who don't understand schematics and don't understand the reasons why a choke
must have just the right properties of its use is in vain.
Of all the iron cored components used in tubed audio gear and their power supplies,
the choke has to have just the right minimum value of L, minimum wire size, and air
gap size or it just will not give satisfactory performance.

It is a fact that although I have hundreds of power and output transformers and chokes
in my stocks, most are widely different to each other, and the chance that something
I have might suit a given project some DIY person says he wants is remote. And after
supplying about 25 items from my stocks of hundreds during the 4 years to about 6
customers, only 1 has completed work on an audio amp project.

So I will NOT spend a pile of time sorting out what you want unless you can convince
me you are serious about building something.

You need to tell me about your project, and give all details of schematic of the amp
and PSU.
Please try to send me a schematic which is well drawn and less than 200kB in file size,
.pdf or .gif, .jpg,
Or send me a link to a URL.

I do not have a large number of identical chokes or pairs of equal chokes for monoblocs.

The average price for a new choke if it weighs say 1Kg and perhaps
4H at 300mAdc
would be aud $80.

Older types would be cheaper.

Email Patrick Turner,

New Chokes.
The C-cored chokes to the right image were recently made in Australia. Most have C-cores and are  nicely layer wound, varnished and perfectly reliable. However, most require that the air gap must be set to suit the maximum wanted inductance at the required dc current.
Old Chokes.
The old chokes in the right image range in age from 60 years to 2 years. Because they are only chokes and not something more complex like a transformer, the are still very reliable and able to be used in any DIY gear which calls for a choke or two and where appearance isn't important although all may be cleaned up and painted to look better. Some are potted and in sealed cans containing special oil. Some are military specification, some are normal open frame and some are badged AWA or Ferguson and have bell ended construction.

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