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NOS (NEVER-USED) EL34 6CA7 MULLARD BRUXELLES BROWN BASE MATCH PAIR TUBES DOUBLE D GETTER HALO 1950 "BWB" FALCON PERFECT MATCHED PAIR
NOS (NEVER-USED) EL34 6CA7 MULLARD BRUXELLES BROWN BASE MATCH PAIR TUBES DOUBLE D GETTER HALO 1950 "BWB" FALCON PERFECT MATCHED PAIR
EL34 6CA7 MULLARD-LABEL M.B.L.E., Bruxelles BASE MATCH PAIR TUBES DOUBLE D GETTER HALO 1950
  
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EL34 MULLARD-LABEL M.B.L.E., Bruxelles DOUBLE "D" GETTER 1950 ESOTERIC TUBES! THE OLD 1950's TUBES ARE COVERED IN MIRROR-LIKE SILVERING, A SIGN OF STRONG HEALTHY TUBES! Tube Museum Quality 1950-60 MADE IN BRUXELLES "MULLARD LOGO" PROFESSIONAL DOUBLE-D-GETTERS EL34 BROWN BASE 1950-1960 known to be …"sonically close to the METAL BASE 1950's and XF Mullard 1958-1962, these are the 3 best sounding EL34 every made"…

All Actual Pictures of Select Premium Audio Tube /Valves with codes both clearly visible! XF4 LOE and XF4 LOE

Would you feed yourself without knowing the ingredients? Of course not, so don't feed your preamp a tube not knowing the complete specifications! Here we have an excellent example of the finest EL34 low-noise tubes.

Actual tubes were tested on the State-of-the-Art Tube Museum Certified Tube Test System CERTIFIED ULTRA-LOW-NOISE SPECIMENS TubeMuseum tested tubes takes the guesswork out of the process of selection delivering you the best Audio tubes that there possibly can be.

The World's most musical EL34 tube known for it's pronounced liquid midrange. Amplitrex Digital tested and plate matched for your musical pleasure Selected for Uniquely Matched Plate-Resistance (Rp) & Tube-Gain (Mu)! ..." This tube is known for excellent performance, incredible bottom end, pronounced liquid midrange, outstanding highs. Described as the most musical sounding EL34 in the world, one of the most rugged longest lasting EL34's ever made, recently imitated but never equaled, clean, and powerful.

These 1950 DD-GETTER legends have a super polished and quite refined bass, midrange, top end. A Major improvement over other 6CA7's. Get rid of those Chinese or Russian 6CA7's and UPGRADE to original Philips DD-getter power tubes - which are Superior by far to Svetlana or Sovtek re-issue EL34's"...

PRICE IS FOR 2 BALANCED & MATCHED TUBES Matched Pair with Double DD Getters TUBE MUSEUM QUALITY STRONG LEGENDARY POWER TUBES LOW-NOISE - BEAUTIFUL SOUNDING - 1950 RARE MADE BELGIUM AUDIO TUBES TWO (2) of the Rare DD-DOUBLE GETTER RING Production, with 2 x D-Getters per tube!

Very Compelling Musical Tone with Long 10,000 Hour Heater Life! These twin top-mica shields are designed to "deflect" unwanted electron bombardment to prevent cathode-poisioning. They work as a deflector-shield and help the tube achieve its correct operation point and last longer and operate cooler.

Recommended for: Conrad Johnson Dynaco ST-70 Vox Park HiWatt Matchless Marshall JTM combo 50 watts 1978 Marshall "Plexi" Fender Amps Musicman These tubes are "PROFESSIONAL SPECIAL QUALITY" Premium Quality Amplitrex Digitally Tested Audio tubes

265 eP (plate voltage) and 250 iP (plate current)
In the auto-bias mode they both match perfect at 105%/105% with power tubes this is what we look for, the mA:The Gm is just as great:
105.4 mA (105.4% Plate) with 12.4mA/V (12,400 Gm) rises to 12,600 with multiple testing105.1 mA (105.1% Plate) with 12.2mA/V (12,200 Gm) rises to 12,500 with multiple testing
It doesn't get better than this.
 All Tubes Tested on Amplitrex AT1000 DIGITAL ELECTRON TUBE TEST SYSTEM @ 250V REAL WORLD POWER!

These are perfect NOS with full logo printing and look like out-of-a-time-capsule, or fresh off the factory floor! I'm very impressed with this pair testing 97%mA with 100% GM, and tube 2 is 96%mA with 99% GM ( 100 / 97.4 mA with 12,400/12,000 Gm)

TubeMuseum tested tubes takes the guesswork out of the process of selection delivering you the best Audio tubes that there possibly can be. Beautiful Pair Balanced & Matched @ fixed bias mode @ 250 VOLTS! CERTIFIED ULTRA-LOW NOISE TOP-GRADE

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