GE 7591A tube. (DS, EL34 box).
Item Tag: Power Tubes
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Strong Pair Sylvania 7591A Power Tubes O Getters Matched Codes Tested TV-7B/U
Both tubes test balanced at 50 with 36 being the minimum score for a good tube (with 65% life remaining).
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Tung-Sol 7591 Made in USA by Sylvania Matched Pair NOS Tubes Boxes Tested TV-7
Matched pair of Tung-Sol 7591 power tubes. Tube markings: TUNG-SOL 7591 MADE IN U.S.A. 3226232-3. Gray plates, top getter, smoked glass, black base. Dealer notations and date codes indicate 1962 production.
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NOS NIB Sleeve of 5 Raytheon 6418 Sub Minature Vacuum Power Pentode Tubes
For sale is a NOS NIB sleeve of 5 Raytheon 6418 subminiature power pentode tubes. NOS, never used. These are part of an old surplus of NOS tubes. Platinum Tubes. WHY PLATINUM TUBES?. Why Platinum Tubes?.
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6146 Amperex Power Beam Output Tube-Holland-Tests 105%/105%-Free Shipping in US
6146 Amperex Holland power beam output tube. This used tube tests new at 110%/110%.
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6LF6 6LX6 6MH6 MOTOROLA HOLLAND QTY1 GOLDEN PREMIUM N30EL HIGH POWER OUTPUT TUBE
6LF6 6LX6 6MH8 N30EL QTY-1 MOTOROLA HIGH POWER OUTPUT TUBES Vacuum tube. HiFi power amplifier tubes. Clean sound for HiFi. Tight powerful sound for guitar. Quantity- One or 1 Tube number 6LF6. NOS (New Old Stock). Quantity one (1) tube. Branded “Motorola” made in Holland. Tubes test between 11,500 and 12,250 uM @ 105 to 125 ma, Over 110% of new. No leakage, Shorts, Excellent emission. Dual “Halo” getter. Date codes are 70 04. 367, 7m, IIIAAG3 Delta 9I1 Getter flashing is bright and clean! Excellent construction, Military spec quality. Very heavy! Over 40 watts plate dissipation! Wow! Tested on our precision, updated, calibrated Hickok 539c.Smudge on glass is our kitty watermark.Purchased in the 1980’s. Tube measures 4 1/2″ from glass base to plate cap.Multiple purchases will me closely matched. BRAND NEW! Tested Excellent! Double Boxed! SHIPPED WITHIN THE 48 STATES. WELL PACKED. BOXED, SHIPPED USPS PRIORITY MAIL. Pay Pal, Master Card, Visa. All items described as accurately as possible so bid with confidence! NO INTERNATIONAL SHIPPING. SEARCH DOES NOT SHOW ALL ITEMS IN E-BAY STORES. COOL_TEK CLICK HERE TO SEE OUR OTHER COOL ITEMS
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Philips EL3N Tubes, Matched Pair, NOS/NIB
I have over 62 years of experience in many facets of electronics design and repair. I have been working with tubes since was a 12 year old child. I am an active ham radio operator and have been for 62 years.
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(4) Apex or TAD Matched JJ Electronic KT88 Power Tubes for Audio Research
Authorized Dealer LAST 2 Quads Matched Quad by Apex or Tube Amp Doctor. JJ Electronic KT88. A superb KT88, rugged and durable. Superb KT88. Can be used in 6550 applications. Especially great replacements for 6550s in older CJ amps, with high screen voltages. Superb Bass, Liquid mid range and sweet highs. Sextets available. Slovakia Made.
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Pair JJ Electronic EL 34 / 6CA7 Power Tubes Tested B&K 700 for GM, 606 Emissions
These appear to be new but since I don’t know for sure, I’m listing them as used. They test 101, 106 for GM on B&K 707 Mutual Conductance tester and 98, 100 for emissions on B&K Dyna Jet 606.
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NEW NESSTONE EL84 6BQ5**QUAD**Hand Selected Power Pentode Tested Tightly Matched
NessTone EL84 / 6BQ5 Hand Selected Power Pentode. They are exceptionally sturdy. Matched sets are matched by plate current and transconductance using the new Maxi Matcher 2.