Cayin HA-6A Class A KT88/EL34 Tube Headphone Amplifier
Nov 15, 2022 at 10:10 AM Post #1,156 of 1,985
How's the bass on them? Im looking for a warm power tube with strong bass for Susvara. At the moment settled for RCA Black Plate 12AU7 into Gold Lion KT88 ... need some socket savers 😂
I originally preferred the Gold Lion KT77. Now, I feel they have too much bass and sometimes depending on my mood, a tad too bright. The 7581A has less amount of bass, so you might want to look into the GL KT77.
 
Nov 15, 2022 at 11:07 AM Post #1,157 of 1,985
What is everyone's favorite power tubes so far? I've narrowed it down to these Tung-Sol 7581A as my preference, they are not as bright as the KT88 and not overly lush like the EL34.

The blue glow is awesome, isn't it? :smile:

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I really like the Tesla Vrsovice KT88's
 
Nov 15, 2022 at 7:54 PM Post #1,158 of 1,985
I was after warm but still detailed sound and black plate was one of the top recommendations. I also have vintage Sylvanias that are great but Black Plates are warmer to my ear.
I also settled with RCA Black plate 12au7s. I also have tried GE pewter plates and found them to be really airy with tons on top end sparkle. If youre looking for really warm sounding tubes (not necessarily bassy) then I would strongly recommend Amperex orange globe 12au7s. These were my first ever tubes that i rolled on the HA6A and It gave me a lot of low end warmth with decent amount of mid bass and smooth treble with deep vocals.
 
Nov 17, 2022 at 12:07 PM Post #1,159 of 1,985
Anyone else is having any 160ma 250V High voltage fuses blow issue in their amp? I blew both of my spare ones the last 2 days and I literally dont know what to do? First fuse blew while i was listening to the music, while the 2nd one blew last night when the amp wasnt in use. I would to get some help regarding this matter.

Thank you.
 
Nov 17, 2022 at 12:35 PM Post #1,160 of 1,985
Anyone else is having any 160ma 250V High voltage fuses blow issue in their amp? I blew both of my spare ones the last 2 days and I literally dont know what to do? First fuse blew while i was listening to the music, while the 2nd one blew last night when the amp wasnt in use. I would to get some help regarding this matter.

Thank you.
The fuse on the inside of the amp blew up on me this summer while tube rolling. Nothing else so far 🤔
 
Nov 17, 2022 at 12:42 PM Post #1,161 of 1,985
The fuse on the inside of the amp blew up on me this summer while tube rolling. Nothing else so far 🤔
oh i see. I have been tube rolling a lot as well but i was under the impression my tubes were all good, since i use the exact same tubes in my Elise OTL. Can you plz tell me which tubes you were rolling? Power tubes? Do you use any socket savers? Any info would be helpful. Thank you
 
Nov 17, 2022 at 12:45 PM Post #1,162 of 1,985
oh i see. I have been tube rolling a lot as well but i was under the impression my tubes were all good, since i use the exact same tubes in my Elise OTL. Can you plz tell me which tubes you were rolling? Power tubes? Do you use any socket savers? Any info would be helpful. Thank you
I was rolling power tubes I think. No socket savers. It also blew up after I finished my session and only noticed when I tried to power the amp on the next day which threw me off.
 
Nov 17, 2022 at 12:55 PM Post #1,163 of 1,985
I was rolling power tubes I think. No socket savers. It also blew up after I finished my session and only noticed when I tried to power the amp on the next day which threw me off.
Okay thanks. I think that could have also been the issue with my unit, imo. I have only used psvane kt88 tubes since I got the amp and have only recently swapped those out for some gold lion kt88 and both times when the fuses blew, the kt88 we being used. But the same gold lion tubes work flawless in my elise otl amp. I'm not sure if those gold lions are the culprit. Now I have gone throw all three of the fuses, I am waiting for spare ones to arrive via Amazon. Can you think of anything else that can cause this issue?
 
Nov 17, 2022 at 1:11 PM Post #1,164 of 1,985
My fuse blew once when I first got my GL KT88. I hardly use the GL KT88, maybe three or four times since and it hasn't blown a fuse yet. I roll tubes everyday with socket savers.
 
Nov 17, 2022 at 1:13 PM Post #1,165 of 1,985
Okay thanks. I think that could have also been the issue with my unit, imo. I have only used psvane kt88 tubes since I got the amp and have only recently swapped those out for some gold lion kt88 and both times when the fuses blew, the kt88 we being used. But the same gold lion tubes work flawless in my elise otl amp. I'm not sure if those gold lions are the culprit. Now I have gone throw all three of the fuses, I am waiting for spare ones to arrive via Amazon. Can you think of anything else that can cause this issue?
Hmm no idea. I use GL KT88 in mine with no issues. You have the tube select switch in the back in the correct position I assume.
 
Nov 17, 2022 at 1:15 PM Post #1,166 of 1,985
Hmm no idea. I use GL KT88 in mine with no issues. You have the tube select switch in the back in the correct position I assume.
Yes sir. I have the switch to kt88 on the back of the amp. I might give another set of gold lions a shot once I get the spare fuses delivered. Thank you for the suggestion. If you can think of anything else, please give me a shout.
 
Nov 21, 2022 at 9:09 PM Post #1,167 of 1,985
Hi. I just got word that the E80CC is compatible with the HA-6A.

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Mine will be delivered here for listening in late December. :relaxed:

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Nov 21, 2022 at 9:36 PM Post #1,168 of 1,985
Hi. I just got word that the E80CC is compatible with the HA-6A.

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Mine will be delivered here for listening in late December. :relaxed:

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Thats not what i heard from Cayin....They finally messaged me saying that the engineers confirmed, it only supports ecc82
 
Nov 21, 2022 at 9:40 PM Post #1,169 of 1,985
Here it is. I hope you are right though. I wanna tube roll something else besides the 12au7.
 

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Nov 21, 2022 at 9:44 PM Post #1,170 of 1,985
Here it is. I hope you are right though. I wanna tube roll something else besides the 12au7.
Your message is asking about the ECC80. I am confirming E80CC. I think the ECC80 in your message is a typo?
 

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