8 MATCHING NOS MID 1960's GE 6072A FOAM COFFIN CASES

1960'S NOS GENERAL ELECTRIC 6072A CLOSELY MATCHED SET OF 8

CONTACT ME IF YOU NEED A LARGER SET I HAVE ANOTHER MATCHING QUAD IN STOCK

HI-FIDELITY AUDIOGRADE FOR AUDIO NOTE AND KONDO EQUIPMENT

THIS LISTING IS FOR 8 CLOSELY MATCHED NOS MID 1960'S GENERAL ELECTRIC 6072A IN SPECIAL FOAM LINED COFFINS. THESE TUBES HAVE GREEN PRINT, BLACKPLATES, DOUBLE MICA SPACERS AND FLAT DISC GETTERS. THEY WERE FOUND IN THE SAME MILITARY SUPPLY CACHE AS THE RAYTHEON 6072A I HAVE BEEN SELLING THIS YEAR. THESE GE WERE ALSO INDIVIDUALLY PACKED IN FOAM LINED COFFIN BOXES AND SEALED IN SPECIAL FOIL LINED PROTECTIVE WRAPPING(SEE PHOTO). I BELIEVE THESE TUBES MUST HAVE COME FROM A BULK PACK AND WERE BOXED AND SEALED BY BY A MILITARY SUB-CONTRACTOR. I HAVE REMOVED THE FOIL WRAPPING IN ORDER TO EXAMINE AND PROPERLY TEST THE TUBES BUT EACH TUBE WILL COME PACKED IN IT'S ORIGINAL COFFIN CASE. THESE TUBES HAVE GREEN PRINT AND HAVE DATE CODES OF 1965 AND 1966. THESE MID 1960'S GE ARE THE LAST HIGH QUALITY VERSION OF GE 6072 AND ARE QUIET AND VERY TONEFUL. GE 6072 FROM THE 70'S AND 80'S WILL WORK BUT ARE PRETTY DEAD SOUNDING AND A PALE SHADOW OF THESE BETTER QUALITY 60'S TUBES.

THE 6072 IS A SPECIAL MILITARY/INDUSTRIAL VERSION OF A 12AY7 WITH A GAIN FACTOR OF 44 AS COMPARED TO 100 FOR A 12AX7. IN THE 1950'S THE 6072 WAS ADAPTED INTO USE BY THE RECORDING INDUSTRY FOR VERY FINE MICROPHONES AND WAS FEATURED IN BILL PUTNAMS LEGENDARY MIC PRE-AMPS INCLUDING THE URIE LA610. THE SOUND OF THE 6072 CAN BE HEARD IN SOME OF THE MOST POPULAR RECORDINGS OF THE LATE 50'S AND EARLY 60'S INCLUDING MUSIC BY THE BEACH BOYS AND FRANK SINATRA AND IS STILL BEING USED TODAY IN NUMEROUS MICROPHONES AND IN UNIVERSAL AUDIO RECORDING GEAR. IN RECENT YEARS HI END AUDIO EQUIPMENT MAKERS AUDIONOTE UK AND KONDO AUDIONOTE OF JAPAN HAVE BEEN DESIGNING EQUIPMENT BASED AROUND THIS WONDERFUL PRE-AMP TUBE. 6072 ARE INCREDIBLY QUIET AND ACCURATE. THE VERY BEST FOR YOUR MICROPHONES, MIC PRE-AMPS AND HI-END AUDIO EQUIPMENT. TUBES ARE GUARANTEED TO MATCH THE DESCRIPTION AS WORKING AND EXCELLENT.

6072A A TEST IN A SLIGHTLY LOWER RANGE THAN 1950'S 6072 NON A VERSIONS. THIS IS NORMAL AND HAS NO EFFECT ON THE PERFORMANCE OF THE TUBES. 1960'S 6072A WERE DESIGNED TO DO THE SAME JOB AS 1950'S 6072 USING LESS CURRENT AND PRODUCING LESS HEAT.

ON AN AT-1000 LABORATORY GRADE TUBE TESTER AT FULL VOLTAGES ALL TUBES READ BETWEEN 1500 AND 1600 MICROMHOS OF TRANSCONDUCTANCE PER TRIODE
NOS 1960'S 6072A TYPICALLY READ BETWEEN 1300 TO 1600 MICROMHOS
TUBES ALSO PASSED TESTS FOR SHORTS LEAKAGE AND GAS AND WERE SUBJECTED TO AN AUDIO SIGNAL TEST AND CONFIRMED AS WORKING WITHOUT EXCESS NOISE AND MICROPHONICS.

I ALSO HAVE A LARGE SUPPLY OF EARLY 1950'S GENERAL ELECTRIC GL AND JG 6072 TRIPLE MICA BLACKPLATE WITH SQUARE GETTERS THE ULITIMATE HIGH QUALITY GE 6072. CONTACT ME IF YOU NEED A TUBE SET OF ANY SIZE.

TEST RESULTS CAN AND WILL VARY ON DIFFERENT TUBE TESTERS AS THIS IS THE NATURE OF TUBE TEST EQUIPMENT. WE CAN ONLY GUARANTEE THESE RESULTS ON OUR OWN CALIBRATED EQUIPMENT BUT IF YOU ARE USING HIGH QUALITY  EQUIPMENT RESULTS MAY BE SIMILAR.

SUGGESTED EQUIPMENT: DYNACO MARANTZ CONRAD JOHNSON HARMON KARDON SCOTT FISHER BAT AUDIO RESEARCH MUSICAL FIDELITY AUDIONOTE MODWRIGHT BELLARI MELODY ONIX MCINTOSH TUBE AMP PRE-AMP PHONO STAGE INTEGRATED AMP MIC PRE-AMP PRESONUS BLUE TUBE ART FENDER MARSHALL VOX SILVERTONE GRETCH PREMIER BADCAT MATCHLESS AMPEG GIBSON SELMER PREMIER SANO VALCO SUPRO RIVERA MESA DUMBLE TRAINWRECK

IN THE COMING WEEKS WE'LL BE LISTING 12AX7'S/7025, 12AY7'S/6072, 5751, 6922/6DJ8'S GOLD PINS, 5687'S, 5AR4'S, 6L6GC, 6V6, 6BQ5/EL84 AND EL34'S AND MORE. THESE INCLUDE NOS AND USED AMERICAN AND EUROPEAN TUBES!.

CHECK OUR POSITIVE FEEDBACK FROM SATISFIED CUSTOMERS. WE PACK ITEMS VERY SECURELY. BID WITH CONFIDENCE. GOOD LUCK BIDDERS!

All sales final. Sold as is. Guaranteed to be as described. We do our very best to provide accurate descriptions using high level test equipment. NO OTHER WARRANTEES EXPRESSED OR IMPLIED. Please consult a qualified technician before installing tubes especially power tubes which may require biasing. We are not responsable for items damaged due to improper use or malfunctioning equipment. In some cases we may require contact with your professional technician to confirm a problem. we do our best to resolve any legitmate issues. Any questions please contact before bidding.

Shipping and handling is $30 for delivery to US lower 48 states PAID FROM US PAYPAL ACCOUNT and includes full insurance. Shipping is non-refundable. Foreign buyers PLEASE SEE THE RATES AT THE BOTTOM OF THE PAGE.  Payment is paypal only. Buyer pays for all shipping costs plus optional insurance. By bidding you confirm that you have read, understand and accept these terms and conditions. GOOD LUCK BIDDERS!