The Western Electric 421A is one of the best ever, large dual triode tubes intended for preamp use. You can build many amps & preamps around it. Traditionally considered to be a superior choice to 6SN7 types. We also receive advice from advanced hobbyists that the WE421A also makes for an excellent power output tube! Specifications confirm this... with a stated theoretical max up to 13 watts( plate output dissapation). That would be it's maxed out configuration. Considering that, real world audiophile users will run these tubes much more conservative fashion, still able to make plenty of power for high efficiency WE, Altec, Lansing, Electrovoice, Stephens, early JBL speakers .. and most any other modern tube friendly horn system. And by the way -- that's each (per) plate . So this one tube, in such a circuit, could potentially drive an entire 2 channel, ultra high efficieny system.
If you need a perfect, single WE421A, jump on this on now. They sell quickly.
One of our dearest customers (Maryland,USA) sends this advice:
"" My amp uses just one 421A for output, really simple and maybe 4 watts. It really brings out the best in the Norelco drivers. I like it better than the 45 tube so far. That tube can sound a bit crystal clear after awhile and I am looking for something that puts some meat on the bones.""
and
"" This is an exceptional tube. Like the Tung-Sol 5998 it has tons of detail and body. Nobody would guess at the price of the amp or that this little driver puts out this much sound. Pretty impressive! And how cool to have one tube doing both channels. I wonder what other uses this tube type has...""
Made over the period of nearly 50 years -- right along side the 300B, 310A & 311 and ... other famous products... one of the last and best big tubes WE made! Large octal base triodes always deliver the rarified detail, and striking presence, that's made Western Electric the sound to beat. Use it as a superior voltage amplifier or phase splitter for a phenominal front end. Tall 30mm black plates and huge dual side getters, leave no doubt -- this construction is of a quality that will never be duplicated.
This tube is the real McCoy. Rare find; NIB sealed, made April of 1974.
Well matched halves, NO shorts. All sides test OVER 105% of NEW spec. Tight base, good letters ( with one minor blemish, and scratch..see exhibit A,D,E,Fand very clear glass.. GUARANTEED no DOA.
... This unit has round getters huge shinny black plates ... genuine WECO. These were obtained from Western Electric, GrayBar the Bell System --- MANY YEARS AGO, and have been store in an estate ever since. Absolutely beautiful letters and shinny, tight base, gleaming mirror chrome flashing. (see Exhibit A,B,C,D,E) so very old and rare these days! This is a matched & tested unit. Study exhibit (A) & (B) to see an actual unit(s) and under Full Load test.
Note that TV7 test also indicates strong / NOS. This Pristine tube measures at 64/63 (min = 40) For easy reference see Jackson's real world .. percentage % reading scale
Exhibit (B) ... this tube is NEW, over 105% both sides. GUARANTEE NO DOA., thoroughly checked out and found to be PERFECT -
See reports (Exhibit C,D,E) with all the legendary quality and durability of genuine WECO made triodes --- they may outlast our children. These are some of the last NOS old units to be found in the USA. Stored carefully for many years. Very rare now and you won't see again and you cannot find them elsewhere in such throughly tested and nice condition (NOS).
Useful in many ways for your vintage audio projects...and the original WECO sound. Cherished by amp & preamp builders all over the world.
All 100% happy customers, see feedback & testimonials. Double box packing. Fast overseas dispatch.
