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In Reply to: RE: Tube Adapters posted by Mechans on January 05, 2017 at 10:07:01
Well I will not disagree with you but, I am using an adapter and a 6f8g tube in place of the 6sn7 with awesome results. So in this instance it improves the sound vs degradation.
Follow Ups:
A lot of people like that tube. Evidently it preceded the 6SN7. I haven't used them but have heard that there very very good. Which 6SN7S did you try?
I have tried just about every 6sn7 out except a few hard to find ones. In the end the 6f8g beat out all of my 6sn7 tubes. Now it has been brought to me that the 6j5g are even better that the 6f8g tubes. So that's why I want to try some.
Have you figured out how to get around the single triode vs. dual triode issue? That seems like a show-stopper to me. They may well be out there and it's my own ignorance of them, but I have never seen an adapter to plug two single triodes into, that then plugs into a single socket for a dual triode. I guess technically it'd work, but I seriously wonder how elegantly it would function.
Yes those adapters are on eBay right now but,they take up space hence the reason for needing a single tube adapter. My amp use one half of the 6sn7.
That seems to be a waste of a perfectly good 1/2 of a dual triode. I don't understand why they designed it that way. But, 6J5G is an excellent sounding tube. I use them to drive pentodes in my SET amp.
Hi Al,
I actually called you today but you had not arrived yet and I forgot to call back. I will try and call again tomorrow..
i can offer 4 adapters for trying EL156 in KT88/6550 position...:))
"Science just illustrates the current state of errors"
Edits: 01/06/17
Ah. My mistake. I wrongly assumed you were using both halves of the 6sn7.
It's OK no problem.
Steve, I've got five or six pair of them leftover from when I had gear that used 6sn7. The same is true of the 6f8g as is true of the 6sn7. TSRP and NU's are the most desirable and best sounding 6f8g. Syls and RCA are good too, but not up to par with the TS and NU. I don't think the 6f8g predated the 6sn7 by all that much, but they are an older and in one respect inferior design to the 6sn7. That grid cap and wire made them problematic with respect to any mobile applications. They are also a good bit taller than 6sn7 and take up more vertical real-estate. Otherwise, I enjoyed them every bit as much as my 6sn7s.
I would suggest that the 6f8g you are using is what is improving the sound over an inferior 6sn7 and NOT the adapter. Maybe better 6sn7's is what you really need?
I am not suggesting the adapters are making the sound better, I am saying the 6f8g tubes are making it better.
I do understand that's not what you were suggesting. The point I was making was that the 6f8g was of so much better quality than the 6sn7 you were using as to deliver improvement despite the adapter. I used those same adapters for years like you've done and never felt they detracted from the sound. The real attraction for me to the 6f8g was that vastly superior examples (NU's and TSRPs) were readily available at fractions of the price of the same tubes in 6sn7 bottles. Sadly that is no longer true as the 6f8g secret is outta the bag.
Agreed.
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