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AUDIO VALVES: ECC88 6DJ8 & E88CC CV2492 CV2493 CCa 6922 7308 PCC88 7DJ8 GOLD PINNED TWIN TRIODES

The ECC88, 6DJ8, CV 2492 are high performance valves that have passed rigorous military specification tests regarding ruggedness, heat and shock resistence, and heater longevity.  Like their civilian/industrial counterparts, they have the four moulded seams on the top, heavily plated gold pins, a halo top getter with a sputter shield below  (with slight raised indentations at the 3 and 9 o'clock positions on the shield) which give rigidity and lower microphonics.

There is also the 7V 300mA heater version of the ECC88, designed for RF usage, the PCC88 or 7DJ8.

Mullard describe the E88CC as being for use in cascode circuits and as a multivibrator and cathode follower in computers. The special quality in this case referred to its long service life and not, as normal, to its being a ruggedised version.   The ECC88 and the special quality gold pinned variants find use in many pre amplifiers and a surprising range of exotica use them:-

 

 Acoustic Plan Vadi (CD-player)

 Aesthetix Io phono stage

 Akai reel to reel tape recorder

 ARC LS-15 linestage

 ARC PH-5 phono

 Audible Illusions preamp

 Audio Note

 Audio Research VT200 amplifier

 Audio Technica 4969 mic

 Audion Black Shadows 2011

 Avalon Compressor

 BAT VK-30

 Blacknote CDP 500

 Blue Circle BC21.1

 CAT SL-1

 CAT SL-1 Signature Mark III preamp

 CJ LP66S

 Conrad Johnson 17LSII preamp

 Conrad Johnson CT6 preamp

 Conrad Johnson GAT

 Convergent Ultimate mk1 2004

 Counterpoint Magnum Opus 1 preamp

 Decco Integrated amp

 DODD Audio linestage preamp

 Eastern Electric Minimax CD player

 Einstein The Absolute Tune Integrated Amplifier

 Graaf GM20 mono amps

 Grommes PHI-26

 Herron 3A

 Herron VTSP-2 preamp

 Kora Hermes II Tube DAC

 Lamm hybrid amp

 LAMM LL2

 Lawson L251 microphone

 Lector Phono-Amp System Mk II

 Manley Steelhead phono

 Music Hall 25.2

 Music Hall 25.3

 Opera Consonance Reference 5.5

 Pathos Integrated amp

 Peachtree NOVA

 Raysonic CD

 Rode K2 and NTK1 mics

 Sonic Frontiers Line 2 SE

 Supratek Cortese preamp

e88cc cv2492

ecc88 e88cc cv2492

6922, CVC ECC88, RFT MANUFACTURE

6922, CVC ECC88, RFT MANUFACTURE
6922, CVC ECC88, RFT MANUFACTURE

6922, CVC ECC88, RFT MANUFACTURE
CV2492, MIL SPEC E88CC, MULLARD, GOLD PIN , WHITE PRINT, MITCHAM MARCH 1963 MANUFACTURE, E88CC

CV2492, MIL SPEC E88CC, MULLARD, GOLD PIN , WHITE PRINT, MITCHAM MARCH 1963 MANUFACTURE, E88CC
CV2492, MIL SPEC E88CC, MULLARD, GOLD PIN , WHITE PRINT, MITCHAM MAY 1967 MANUFACTURE, E88CC

CV2492, MIL SPEC E88CC, MULLARD, GOLD PIN , WHITE PRINT, MITCHAM MAY 1967 MANUFACTURE, E88CC
CV2492, MIL SPEC E88CC, MULLARD, MATCHED PAIR, SAME FACTORY CODE, 7L1 RAC2, MITCHAM MARCH 1963 MANUFACTURE, E88CC

CV2492, MIL SPEC E88CC, MULLARD, MATCHED PAIR, SAME FACTORY CODE, 7L1 RAC2, MITCHAM MARCH 1963 MANUFACTURE, E88CC
CV5358, MULLARD, MIL SPEC ECC88, 6DJ8, , WHITE PRINT, BLACKBURN FEBRUARY 1968 MANUFACTURE, 6A2 B8B4

CV5358, MULLARD, MIL SPEC ECC88, 6DJ8, , WHITE PRINT, BLACKBURN FEBRUARY 1968 MANUFACTURE, 6A2 B8B4
CV5358, MULLARD, MIL SPEC ECC88, 6DJ8, , WHITE PRINT, HERLEEN 1972 MANUFACTURE A2G4

CV5358, MULLARD, MIL SPEC ECC88, 6DJ8, , WHITE PRINT, HERLEEN 1972 MANUFACTURE A2G4
E88CC,BRIMAR, 6DJ8, GOLD PIN , WHITE PRINT, OCTOBER 1960 MANUFACTURE,

E88CC,BRIMAR, 6DJ8, GOLD PIN , WHITE PRINT, OCTOBER 1960 MANUFACTURE,
EC86, TELEFUNKEN, 6CM4, NOS

EC86, TELEFUNKEN, 6CM4, NOS
EC88, SIEMENS, 6DL4, NOS

EC88, SIEMENS, 6DL4, NOS
EC88, TELEFUNKEN, 6DL4, NOS

EC88, TELEFUNKEN, 6DL4, NOS
EC88, VALVO, 6DL4, NOS

EC88, VALVO, 6DL4, NOS
ECC88, BRIMAR, 6DJ8, WHITE PRINT

ECC88, BRIMAR, 6DJ8, WHITE PRINT
ECC88, HEWLETT PACKARD BADGED AMPEREX, FAINT WHITE PRINT, FACTORY CODE, GA7 A2F3 HEERLEN 1962 PRODUCTION

ECC88, HEWLETT PACKARD BADGED AMPEREX, FAINT WHITE PRINT, FACTORY CODE, GA7 A2F3 HEERLEN 1962 PRODUCTION
ECC88, HEWLETT PACKARD BADGED AMPEREX, WHITE PRINT, JULY 1961 DATE CODE

ECC88, HEWLETT PACKARD BADGED AMPEREX, WHITE PRINT, JULY 1961 DATE CODE
ECC88, MULLARD, 6DJ8, , WHITE PRINT, BLACKBURN 1959 MANUFACTURE, B9C5

ECC88, MULLARD, 6DJ8, , WHITE PRINT, BLACKBURN 1959 MANUFACTURE, B9C5
ECC88, MULLARD, 6DJ8, , WHITE PRINT, BLACKBURN 1961 MANUFACTURE, B1I2

ECC88, MULLARD, 6DJ8, , WHITE PRINT, BLACKBURN 1961 MANUFACTURE, B1I2
ECC88, MULLARD, 6DJ8, , WHITE PRINT, HERLEEN 1959 MANUFACTURE

ECC88, MULLARD, 6DJ8, , WHITE PRINT, HERLEEN 1959 MANUFACTURE
ECC88, MULLARD, MATCHED PAIR, SAME FACTORY CODE, GA2 B5L1, BLACKBURN NOVEMBER 1965 MANUFACTURE, ECC88

ECC88, MULLARD, MATCHED PAIR, SAME FACTORY CODE, GA2 B5L1, BLACKBURN NOVEMBER 1965 MANUFACTURE, ECC88
ECC88, RFT, WHITE GENERIC PRINT, IK DATE CODE

ECC88, RFT, WHITE GENERIC PRINT, IK DATE CODE
PCC189, ULTRON, NIB, 7ES8, POTENTIAL ECC88 SUBSTITUTE

PCC189, ULTRON, NIB, 7ES8, POTENTIAL ECC88 SUBSTITUTE
PCC88, MULLARD, 7DJ8, NEW BOXED, PLAIN WHITE PRINT, Dj1 B1G, BLACKBURN 1961 MANUFACTURE,

PCC88, MULLARD, 7DJ8, NEW BOXED, PLAIN WHITE PRINT, Dj1 B1G, BLACKBURN 1961 MANUFACTURE,
PCC88, TUNGSRAM, 7DJ8, NEW BOXED, PLAIN WHITE PRINT, 1960S MANUFACTURE,

PCC88, TUNGSRAM, 7DJ8, NEW BOXED, PLAIN WHITE PRINT, 1960S MANUFACTURE,