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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

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