ECC88 6DJ8 & E88CC CV2492 CV2493 CCa 6922 7308 GOLD PINNED TWIN TRIODES VARIOUS MANUFACTURERS

Manufacturers: Amperex , Brimar , Mullard , Philips , Siemens , Telefunken

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.

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 special edition
 Supratek Cortese preamp
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