Item #102069

Info: 6DJ8 ECC88 SIX LOT Preamplifier tubes Audio Research Conrad Johnson etc 4 Holland 1 British 1 Japan

Asking Price: $300.00 Acceptable payment types: cash, paypal Category: Vacuum Tubes - Valves Date Posted: Sep 30, 2008 05:00:13 PM More Info Added on: Oct 13, 2008 10:09:36 AM About Seller: Add to My Hotlist Username: vintageman55 Real name: vince The Mountain, ON Canada [other classified ads] Canuck Audio Mart: User Feedback   : 3

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Description

For sale six 6dj8s ECC88s quad from holland(amperex bugle boy?) 1 British Mullard? 1 made in japan sylvania

The 6DJ8/ECC88 is a twin triode in a small 9-pin miniature glass package with a very high transconductance for each triode unit. Well made vintage versions of this tube are quite low noise and can be found in many tube preamplifiers phono preamps and headphone amplifiers. This tube was also widely used in Tektronix oscilloscopes and other industrial test equipment needing wideband signal amplification. The grid wire itself is vanishingly thin....thinner than human hair. These tubes were not originally designed for audio use but more so for test equipment. Therefore not alot of attention was paid to making this tube as quiet microphonically as possible and the fine grid wire on the blockedframe can tend to exaggerate the problem if it exists in the particular tube. The better Western Europe vintage tubes seem to be the best with regards to low microphonics and low noise. Matching these closer than 5 percent is often difficult as is the case with most vintage tubes since quantities are rarely found from the same batch or date code. This should not pose a problem for any well-designed preamp circuit.


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