Feliks-Audio EUFORIA - A Wolf in "Sheep's" Clothing...
Aug 21, 2021 at 3:20 PM Post #9,586 of 11,460
I am curious about the sound of the gold lion KT88 outside warranty, I have 2 pair 6N13S. If it sounds great, and will not destroy the amp, everybody happy. If I destroy the amp I am most certainly a fool.
Many here have used the Gold Lion KT88 on Euforia and Elise. You will not damage your amp, but you must use the correct adapters, and stay within the current constraints of the amp.
 
Aug 21, 2021 at 3:34 PM Post #9,587 of 11,460
I am curious about the sound of the gold lion KT88 outside warranty, I have 2 pair 6N13S. If it sounds great, and will not destroy the amp, everybody happy. If I destroy the amp I am most certainly a fool.
Hello,
Myphone has exchanged the Mundorf capacitors for the V caps.
And had reported that the increase has increased.
Read a few pages back and maybe this upgrade will be more effective and interesting for you when your Euforia is out of warranty.
Possibly better than going to Kt88.

It doesn't necessarily belong here, but it might be helpful as an inspiration.
My Little Dot 1+ was defective because of a tube socket and capacitor.
I changed both and replaced the Elna electrolytic capacitors with Nichicon Fg and yesterday I replaced the original Op amp with the Burson V5i and the result was quite surprisingly great.
The little one has been making a real noise ever since.had done justice to many things but not this one.
I don't want to say that the Mundorf used in the Euforia are bad, but if there are better ones that can offer a bigger upgrade, why not?

Maybe @myphone can report more on this and contribute some insights.
 
Aug 21, 2021 at 3:56 PM Post #9,588 of 11,460
Only use the 6N13S in the back 2 sockets, not all 4 as I think that is too much heater current.
You can use 2 6N13S in the back 2 and any 6SN7GT/GTA/GTB and equivalent in the front with no issue as those are within the 7 amp operating spec of the Euforia.
 
Aug 22, 2021 at 2:25 PM Post #9,589 of 11,460
Yorbam I have have used the Gold Lion kt66 as drivers and the Katy 88 as Powers off and on for the last year or so and have had no ill effects. At that time I had the uforia app and I now have the Emporia a e and have had very results with these tubes
 
Aug 22, 2021 at 2:28 PM Post #9,590 of 11,460
This photo is from today
 

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Aug 22, 2021 at 3:07 PM Post #9,591 of 11,460
This photo is from today
Does these type of tubes sound better than like a 6sn7 and 6080 combination?

Or is it just good bang for the buck compared to good NOS tubes ?
 
Aug 22, 2021 at 5:24 PM Post #9,592 of 11,460
On 22 Aug 2021, at 08:59, Yoram Diamand <yoramdiamand@gmail.com> wrote:


Hello Lukasz, I bought some Chi-fi goldpin converter for KT88 as the price of the 7236 went up 100 dollar, from 139 towards 240 dollar a pair at Woo. I wrote to Tube factories, please make an affordable 7236/5998 tube or the Euforia/ WA2/ WA22 will become worthless as the New Old Stock becomes extinct. The KT88/ 6sn7 combo will not make the euforia explode or something but I will not throw away my amp when the 7236 tubes I have die on me. I guess the Cetron 7236 will be better than the Gold Lion KT88 but the Gold Lion will not be terrible, I hope. Kind regards Yoram

Hi Yoram

The KT88 is not meant to be used in Euforia/Elise, it may lead to damage to the amplifier. You can use 7236 or any other 6AS7/6N13S/6080 family tubes - plenty of these on the market.

Regards
Lukasz

Feliks Audio - handcrafted tube amplifiers
www.feliksaudio.pl
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Aug 22, 2021 at 5:27 PM Post #9,593 of 11,460
Does these type of tubes sound better than like a 6sn7 and 6080 combination?

Or is it just good bang for the buck compared to good NOS tubes ?
Very subjective to be sure, but I actually prefer the 6L6 / KT66, KT88 type tubes as powers in Elise. They also draw less heater current and run cooler, I also have some 6V6 that are a bit anemic as powers but make very nice drivers. It is good to have options but of course YMMV.

Here is what I am running this pleasant Sunday afternoon. The powers are Sylvania 5932, a 6L6 variant. Drivers are Ken-Rad VT-107A, a 6V6 variant. Adapters are by our friend @Deyan. Leif Ove Adsnes playing Mozart's Piano Concerto #2 with the Mahler Chamber Orchestra is sounding quite fine. Albert and the gang are appreciative and enjoying the music!

Ken-Rad VT-107A & Sylvania 5932 in Elise (7-17-21).jpg
 
Aug 22, 2021 at 5:29 PM Post #9,594 of 11,460
On 22 Aug 2021, at 08:59, Yoram Diamand <yoramdiamand@gmail.com> wrote:


Hello Lukasz, I bought some Chi-fi goldpin converter for KT88 as the price of the 7236 went up 100 dollar, from 139 towards 240 dollar a pair at Woo. I wrote to Tube factories, please make an affordable 7236/5998 tube or the Euforia/ WA2/ WA22 will become worthless as the New Old Stock becomes extinct. The KT88/ 6sn7 combo will not make the euforia explode or something but I will not throw away my amp when the 7236 tubes I have die on me. I guess the Cetron 7236 will be better than the Gold Lion KT88 but the Gold Lion will not be terrible, I hope. Kind regards Yoram

Hi Yoram

The KT88 is not meant to be used in Euforia/Elise, it may lead to damage to the amplifier. You can use 7236 or any other 6AS7/6N13S/6080 family tubes - plenty of these on the market.

Regards
Lukasz

Feliks Audio - handcrafted tube amplifiers
www.feliksaudio.pl
Follow us on facebook
Yes, Luckaz is entitled and expected to say that and it is strictly correct. However, many of use as posted here on the forum have had great experience with KT-88. It is up to you whether you wish to try of course.
 
Aug 22, 2021 at 5:54 PM Post #9,595 of 11,460
I would prefer to change the capacitors instead of changing to non-approved tubes that are not approved by Feliks.
The whole thing is done in 1-2 hours and can be done again and dust off the approved tube families that are in the drawer and test if it could have improved.

Everything else is the typical rabbit hole.
It doesn't have to be the expensive Vcaps, it can also be the ones from Audio Note or Janzten.
 
Aug 22, 2021 at 6:06 PM Post #9,596 of 11,460
I would prefer to change the capacitors instead of changing to non-approved tubes that are not approved by Feliks.
The whole thing is done in 1-2 hours and can be done again and dust off the approved tube families that are in the drawer and test if it could have improved.

Everything else is the typical rabbit hole.
It doesn't have to be the expensive Vcaps, it can also be the ones from Audio Note or Janzten.
I highly doubt a capacitor change would be any more approved though
 
Aug 22, 2021 at 6:54 PM Post #9,597 of 11,460
This is my Elise with the same tube setup as DR @LoryWiv
 

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Aug 23, 2021 at 11:29 AM Post #9,598 of 11,460
Are there any distinctive differences between the regular euforia and the AE edition? I unfortunately cannot A/B both of them for sonic comparisons because a local dealer is unavailable to me at this current time. I have been reading the thread but I am still undecided if I should just spend the extra cash for the AE and get it over with.
 
Aug 24, 2021 at 12:58 PM Post #9,599 of 11,460
After viewing your post, I figured I would give that combo a try. Don't know why I had not done this one before. Sound is excellent, thanks for posting, another great combo to put in the rotation
 
Aug 25, 2021 at 12:59 AM Post #9,600 of 11,460
Question for other users running low impedance HP out of Euforia: My only experience with Elise thus far is with my beloved ZMF Auteur at 300 ohm impedance. Iam very interested in the Clear Mg as a complimentary set but in general it's stated that Elise / Euforia with their high output impedance around 50 ohms are better suited for high impedance headphones. However, Feliks specs state compatibility at 32-600 ohms. T

hus the question, can one get good synergy with Elise / Eforia out to relatively low impedance headphones like Clear, Stellia, Empyrean or does it alter the sound signature and tonality in potentially undesirable ways?

Thoughts from other users appreciated. Thanks!
 

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