2 x Amperex Orange Globe ECC88 matching pair
(2) x NOS-NIB Northern Electric 12AU7/ECC82
With long plate angled-tilted O-getter
Date code: k63 D8I (September 1958 manufacture date)
D code (made in Hamburg factory Germany)
Test results: 2570/2450
min. good: 1950
Instead of using 12AU7 please try these warm sweet with tight bass1960's direct drop in RCA Hewlett Packard 5963 tubes
5963 / 6189 Tubes
NOS vintage mil. spec. 1950-60's tubes from our dad Dynaco Dave's collection.
These are military spec version of the 12AU7 tube, solidly constructed to superior specifications
Direct drop in replacement variants for any 12AU7 tube.
All tubes are matched and balanced
Strongly testing at very high NOS range: 120/120 or greater!
-USA NOS Matched pairs of GE 12AU7 w/ horseshow getter tubes
-RCA Clear Tops 12AU7
-Japanese Matsushita 12AU7
We have some really nice quiet Vintage Vacuum Tube NOS (New Old Stock)
These are excellent quality sweet sounding beautiful vintage 1957-59 12AU7 tubes
These tubes were made by Sylvania for Allen tube amps from 1957 - 1959
These are some of the best sounding tubes made in the USA!
They were all selected for low noise/microphonics.
Tubes sound fantastic with excellent mids!
NOS level test, ready for a very long life of tone.
The GE versions pretty much always used grey plates and a top getter for this tube.
The numbers are etched into the glass with a pattern of dots below the number.
Don't miss trying these "organ stock production" 12AU7 tubes that were as well also sold to organ manufacturers.
These sweet tubes were screened for audio use in organs, and make great tubes in pre amps/amps!
All of these vintage tubes used a chalky white label paint
You can do an ebay/google search for Allen tube amps and tubes
Most tube users know who made the tubes regardless of what name is on the label
All tubes test strong
They have been tested on a fully updated calibrated B+K 747 tube tester
(Min 725 Max 1250)
Test Results:
Tube 1: Tests 1300/1250
Tube 2: Tests 1275/1275
Tube 3: Tests 1300/1250
Tube 4: Tests 1250/1225
Also have some:
Vintage 1960's RCA, Sylvania/Baldwin organ grade black plate 12AU7- 5814-5963-6189 tubes
Very sweet + seductive, a bit recessed, but in the right way.
Excellent treble, great with vocals, good bass, good 3D stage, quiet tubes!.
Allen 1957 12AU7
Does everything well, does not call attention to any area of the audio spectrum, good 3D soundstage, deep bass, quiet (a best buy at it's price point)
GE 5751:
WOW! Extremely lush, great vocals deepest bass in this rig, big, wide, deep soundstage. A winner!
Also have pairs of 5963 / 12AU7A [ECC82]
Brands: RCA / SYLVANIA / HEWLET PACKARD hp / BECKMAN
5963 are 12AU7 direct drop in variant tubes
Plate Construction: Gray + some Black plates
Getter Construction: Top O
Country of Manufacture: USA
Visible Date Codes: IP/M08/CXDJ
Number of Mica Spacers: 3
Mica Shape: Sawblade
Vintage pairs of 1960's Organ Grade ECC82 12AU7 + variant direct drop in tubes
All tests very strong!
-1960's Westinghouse 7025A USA
-1950's RCA Clear Top 12AU7 USA
-GE, JAN-GE, JAN-Sylvania 5751 lower gain 12AX7 direct drop in variant
-Hewlett-Packard 12AU7/5963
-USA RCA 12AU7A / 5963
-RCA 12AU7 Black Plates
-USA 5814/5963/6180/12AU7
-Vintage 1965 Baldwin 12AU7
-USA JAN GE 12AU7A
-USA RCA 12AU7A
-USA RCA 5963
-USA 5814A
-USA JAN SYLVANIA 12AU7
-USA 5608 / 12AT7WA
-USA NOS Matched pairs of GE (1954) 12AU7
-USA Matched pairs of 5814A / 5963 / 6189 tubes
-USA made RCA 12AU7A tubes
