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08/19/24 at 21:18:19 




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Favorite 6CG7 tube? (Read 2206 times)
Lon
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Re: Favorite 6CG7 tube?
Reply #50 - 07/26/24 at 20:55:09
 
Right. It's a version of the 12AU7 type. Here is the description from the Brent Jesse site:

E80CC / 6085:This unusual European tube is basically an industrial type 6085. However, it's specs are similar enough to a 12AU7 that audiophiles are grabbing them up while the prices are still reasonable. The heater life is rated at 10,000 hours, and some have gold pins. The larger box plate structure gives this tube low microphonics and silky smooth sonics. Some of the Philips Holland versions had the rare pinched waist, where the glass dips inward and actually molds around the top mica plate, giving the plates extra support and virtually eliminating microphonics. There is also a version made at the Amperex factory in Hicksville, NY, which is often priced lower but looks the same and sounds very similar to the Holland version. Since this tube has a much higher Gm and Mu factor than a 12AU7, the gain is going to be greater and this tube will give a more forward presentation. Awesome in phase splitter applications. If in doubt, check with your amp or preamp manufacturer to see if this tube will work OK in your application. This tube is also about twice as tall as a 12AU7, so installation space in your chassis is a consideration as well. These are out of production, rare, and getting very hard to find. The European types usually command the top prices, but USA types exist as the 6085 and should be a bit lower in cost, but they are also rare and climbing in price. Many USA tubes were actually made by the European factories, so watch for the 6085 USA brands!
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Hearafter
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“In Tubes We Trust”

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Re: Favorite 6CG7 tube?
Reply #51 - Today at 18:18:22
 
After several weeks messing around rolling with the RCA 6CG7 Black Plates with center shields in my Torii Jr I have to say they are a very nice tube alternative to 7308, E188CC, 6N23P tubes.  Can’t really say any tubes are really the best they all have their flavors and strengths.  Just a quick listening recap of my tubes on my system.
RCA 6CG7 BP- warm, full sounding with nice detail slightly recessed.  Lower gain needs added gain adjustments from preamp. Not ideal for low volume listening but shines as volume increases. Nice when paired with brighter pre and amp output tubes. My fav warm full sounding machine tube.
Amperex 7308 USN USA made-  Just does everything right.  Not as warm or full sounding as the 6CG7 but has improved clarity, reduced noise and detail.
French Philips E188CC- very similar to my Amperex7308 but has a little extra dynamics and punch that puts smile on. My fav smooth tube.
Refecktor/Voshkod ‘73-75 6N23P SWG- these are yet another step up from the 7308/E188CC’s.  Just more of everything. Clarity, detail, sound stage, best gain and the quietest background.  Great paired with warmer pre or amp output tubes but not necessary. Might say it lacks just a touch of warmth but still my overall fav!  All of these tubes get shared time just depends on the mood and genre.  Fun times.
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