AUDIO VALVES: ECC82 12AU7 CV491 CV4003 B329 M8136 7193 TWIN TRIODE

The ECC82 was designed as a general purpose medium mu twin triode. A special quality version was also produced, for the military bearing the notation CV4003. An anti-microphonic and matched section version designated the E182CC was also made.

An amplification factor of 17 is quoted, which is much lower than that for the pin compatible ECC83 at 100. The glass tube envelope is approximately 20 mm in diameter and, excluding the B9A button base pins, is approximately 50 mm in height.

The ECC82 found use in many hifi amplifiers and guitar amplifiers of the golden valve era and many exotica also have them lurking beneath their covers, this list details just some of them: -

Allen & Heath VF-1 compressor

Ampeg SVP-PRO Bass Preamp

Art PRO VLA II comp

Audio Note CD2

Audio Note L2 Custom - Response Audio

Audio Note M1 preamp

Audio Note M8

Audio Valve Eclipse preamp

Bottlehead

CJ PV10

Concert Fidelity CF-080LS Hybrid Line Stage Preamplifier

Conrad Johnson PV 10AL

David Berning ZOTL Pre One Audio Preamplifier

Decware Zbox Unity Gain Stage

Eastern Electric DAC

Eastern Electric Minimax

Head-Direct EF1 preamp

Jadis JP-800 preamp

JJ243 preamp

Octave (Germany)

Odyssey Kandela preamp

Ray Samuels Raptor

Ray Samuels The Emmeline II, “B-52” fully balanced Headphone amplifier and full functioning preamplifier

Rogue Audio Cronus

Rogue audio Perseus + Rogue audio stereo 90,

Roth Audio MC4 Music Cocoon

Scott Tuner

Sonny Jr. Four-ten / Customized Harp Amp

Sun Audio 1000

VAC PA100/100

Velleman K4000 kit

VTL 6.5 preamp

VTL 7.5 Series II

VTL TL 7.5 MKII preamp

Wavac pr-t1 preamp

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12AU7A, MINIWATT AUSTRALIA BADGED, MULLARD HENDON WORKS ALBERTON, MARCH 1963 PRODUCTIONL

5963, SYLVANIA, LONG PLATE, YELLOW PRINT, OCTOBER 1969 PRODUCTION

6189, SYLVANIA, GREEN PRINT, 1970 PRODUCTION

Brimar, 12AU7, ECC82, October 1964 Footscray Production

Brimar, 12AU7, ECC82, Red Print, 17mm Anode, September 1955 Footscray Production

Brimar, Experimental, Laboratory Sample, 16mm Anode, 6067, ECC82 B9A Based, Jan 1956, FULL EMISSION

CV4003, BRIMAR, MILITARY SPEC,ECC82, ECC82WA, AUGUST 1970 ROCHESTER PRODUCTION

CV4003, MULLARD, ECC82, , MITCHAM, AUG 1980 PRODUCTION,

E182CC, MULLARD,, ID2 A1L4, HEERLEN, HOLLAND DECEMBER 1961 MANUFACTURE,

E182CC, MULLARD,, ID4 A7H4, HEERLEN, HOLLAND DECEMBER 1961 MANUFACTURE,

ECC82, BRIMAR, ECC82, MATCHED PAIR, 17mm PLATE, 4B1/1571, FEBRUARY 1971 ROCHESTER PRODUCTION, NOS ORIGINAL ZAERIX BOXES

ECC82, MAZDA, MATCHED PAIR, WHITE PRINT, UK MANUFACTURED 1960S PRODUCTION

ECC82, MAZDA, WHITE PRINT, 1960S MANUFACTURE

ECC82, MULLARD, NEW SHIELD, WHITE PRINT, Gf2 B1C1, BLACKBURN, MARCH 1971 MANUFACTURE

ECC82, MULLARD, OLD SHIELD, WHITE PRINT, HYPERLEC BRIVE FRANCE, 1963 MANUFACTURE

ECC82, MULLARD, WHITE PRINT, Gf2 B8I1, BLACKBURN, SEPTEMBER 1968 BLACKBURN MANUFACTURE, NOS BOXED,

ECC82, MULLARD, YELLOW PRINT, G17 r3J4, PHILIPS ONTARIO 1964 MANUFACTURE

ECC82, MULLARD, YELLOW PRINT, Gf1 B3A3, BLACKBURN, JANUARY 1963 MANUFACTURE

ECC82, TELEFUNKEN, NOS BOXED, BERLIN DECEMBER 1963 MANUFACTURE

SCOBA BADGED, MULLARD, WHITE PRINT, CV4003, MIL SPEC ECC82, FACTORY CODE, Gf1 V4,