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Western Electric 420a >> 12AX7 or 12AT7 Tubes with Adaptors NOS - 3 pairs

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Price: $135
Item Condition: NOS with new adaptors
Shipping Options: Pickup available and you can audition.,Shipping is included in price.
Suburb or Town: Little Bay
State: New South Wales
Payment Method: Paypal, EFT, Cash on Pickup
Reason for selling:

Item: Western Electric 420a >> 12AX7 or 12AT7 Tubes with Adaptors NOS - 3 pairs.  Date marking: 7952
 

For sale are these great sounding Western Electric 420a /JW 5755 NOS tubes which when coupled with an adaptor (included) function as a superior 12AX7 or a 12AT7.  

 

They are much better in many ways than other 12AX7s I have tried, including: Mullard, Telefunken, Amperex and any Chinese tubes (Psvane etc).

The most obvious improvements came in bass drive and resolution. Greater timbral information and texture is evident throughout the mids and bass.  Glorious textural information not experienced with any of the tubes mentioned above.  Dynamics are scary.  Clarity is excellent. 

 

Designed for very low microphonics… 

The WE 420a "features special cathode springs which reduce microphonic response. This characteristic is controlled by a "microphonic stability" test for balance in which the tube is tapped at shock levels of 400 - 600G."   Very fine wires (springs) just above the top mica can be seen in pics.

 

The specs are a little different from a 12AX7 which has an amplification factor of 100, 12AT7 is 60, and the Western Electric 420a is 70.

I have tried the Raytheon 5755 and GE equivalents and as expected the Western Electric sounds better and is reliable (the Raytheon is not).  WE is the real deal!

 

I guarantee these will be keepers irrespective of the tubes you are using.

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IMG_0084.JPG

 

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I have bought 9 of these WE tubes from MGO  (6 for my Audio Research SP6B preamp, and then another 3 for spares!!) several months ago.

I took a bit of a gamble, but let me tell you - they are as good as he describes! They bettered and replaced both my Full Music 12ax7 and my Genelex Gold Lion 12ax7's. 

Very full and tactile bass, and to my ears much smoother mids/highs and more musical (less hifi) than my previous tubes.

Highly recommended, and a genuine/great seller!!

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would this be good on a bottlehead crack with speedball?

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Is the pricing for all 3 pairs?

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I got 2 pairs of these for my Herron Audio phono stage, and like MGO described, these are fantastic tubes.

They make the music sound livelier and fuller, transformed my Herron to a beast! Highly recommend these tubes.

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30 minutes ago, caminperth said:

Is the pricing for all 3 pairs?

Highly unlikely

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17 hours ago, benny said:

Highly unlikely

Worth a try..😂

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On 10/04/2020 at 6:25 PM, caminperth said:

Is the pricing for all 3 pairs?

Price is for a pair.  That is, two tubes and two adaptors.

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