MGO Posted September 6, 2019 Share Posted September 6, 2019 (edited) SOLD Item: Western Electric 420a >> 12AX7 or 12AT7 Tubes with Adaptors NOS Location: Sydney East Price: $135 per pair plus postage. Without adaptors $110 Item Condition: NOS perfect Reason for selling: NLR Payment Method: Pickup - Cash, Paypal, Bank TT THESE ARE SOLD BUT WAITING ON MORE ADAPTORS. ONE OR TWO WEEKS... 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 equivalent 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. Happy to demo against Mullard and Psvane or your own tubes to serious buyers. Edited September 8, 2019 by MGO Link to comment Share on other sites More sharing options...
atra4 Posted September 6, 2019 Share Posted September 6, 2019 i'll grab them. Pm incoming Link to comment Share on other sites More sharing options...
AccuTidal Posted September 6, 2019 Share Posted September 6, 2019 (edited) Whoa... rare find. Edited September 6, 2019 by Chanh Link to comment Share on other sites More sharing options...
ochremoon Posted September 6, 2019 Share Posted September 6, 2019 I assume atra4 is grabbing all 4 of them? If not, I'll have one pair. Link to comment Share on other sites More sharing options...
MGO Posted September 6, 2019 Author Share Posted September 6, 2019 If you'd like a pair, where would you like them sent? So that's $135 plus say $10 postage. Please paypal to: mark@cdillumination.com Cheers MArk Link to comment Share on other sites More sharing options...
ochremoon Posted September 6, 2019 Share Posted September 6, 2019 Will PM you my address. Link to comment Share on other sites More sharing options...
Darkstar Posted September 6, 2019 Share Posted September 6, 2019 i believe atra4 is taking all 4 Link to comment Share on other sites More sharing options...
MGO Posted September 6, 2019 Author Share Posted September 6, 2019 I am getting more adaptors coming in a week or so. If you'd like a pair of these tubes please put your hand up. Link to comment Share on other sites More sharing options...
Odyssey Posted September 6, 2019 Share Posted September 6, 2019 I'm putting my hands up for a pair of the Western Electric 420a. Link to comment Share on other sites More sharing options...
doogie44 Posted September 7, 2019 Share Posted September 7, 2019 Best photos of a 'For Sale' item in SNA this year! Link to comment Share on other sites More sharing options...
MGO Posted September 7, 2019 Author Share Posted September 7, 2019 Thanks for the photo accolade Doogie44! Link to comment Share on other sites More sharing options...
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