Cayin HA-6A Class A KT88/EL34 Tube Headphone Amplifier
Jan 24, 2024 at 5:58 PM Post #1,862 of 1,937
Glad you have a smooth start with your HA-6A. A lot of users have experienced noise or ground hum problems.

Unlike HA-3A or HA-300mk2, the HA-6A was less IEM-friendly because the 4.4mm and XLR4 phone outputs are identical. I assume the Elysian Annihilator is relatively inefficient? That probably explains why you feel the IEM performs to another level when you drive it with a high-power tube amplifier. We are surprised by pairing with inefficient IEMs as well, that's why we decided to lower the power of 4.4mm of HA-3A and HA-300MK2 afterward, to make it more IEM-friendly.
@Andykong - would love to have Cayin apply the lower power to the 4.4mm in HA-6A along with speaker taps perhaps next revision would be great to use the amp with headphones and speakers for the KT family of tubes.
 
Jan 30, 2024 at 12:33 AM Post #1,863 of 1,937
KgQJ1mA.jpg

Sophia and Mullard
 
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Jan 30, 2024 at 12:39 AM Post #1,864 of 1,937
KgQJ1mA.jpg

Sophia and Mullarad
There you go. A nice long life tube and some good tunes. I find they add a real nice spark of life to the music.
 
Jan 30, 2024 at 7:37 AM Post #1,865 of 1,937
Jan 30, 2024 at 8:51 AM Post #1,866 of 1,937
I just snagged a pair of Amperex Holland E80CC tubes. Should be fun.
Would love to hear your impression of the amperex tubes.

The Mullards I use produce a really dynamic, fast sound. Not too tubey sounding, but enough to add slight coloration to the overall sound and I think the Sophia power tubes really add to the warmth as well.
 
Jan 30, 2024 at 8:52 AM Post #1,867 of 1,937
Would love to hear your impression of the amperex tubes.

The Mullards I use produce a really dynamic, fast sound. Not too tubey sounding, but enough to add slight coloration to the overall sound and I think the Sophia power tubes really add to the warmth as well.

Well, since your Mullards were made in Holland, I'm guessing that they are probably Amperex made.
 
Jan 30, 2024 at 10:02 AM Post #1,868 of 1,937
Well, since your Mullards were made in Holland, I'm guessing that they are probably Amperex made.
I do like the sound of that...
 
Jan 30, 2024 at 10:12 AM Post #1,869 of 1,937
I do like the sound of that...

Yeah, I probably would, too. With most preamp tubes, I tend to favor Amperex over Mullard. Of course, there are always exceptions and it depends on the overall pairing of tubes across the entire amp.
 
Feb 4, 2024 at 1:58 PM Post #1,870 of 1,937
Hi there fellas,

I'm about to purchase a very cheap Hifiman HE6SE V2, I wonder if anyone have tried with HA-6A and using balanced can give enough juice to em

Thanks!
 
Feb 5, 2024 at 6:34 AM Post #1,872 of 1,937
Hey Cayin HA-6 fellas,

it has become very quiet here, are you still happy with your HA-6 or already sold it?:L3000:
Hype me up pls ^^
I sold it and bought it back again in less than a year, installed RTC 12au7 valves with GL KT88 and end game haha

UL mode surprises me the most with live music
 
Feb 5, 2024 at 5:52 PM Post #1,874 of 1,937
I didnt sell mine I just bought a HA-300MKII so the 6A has taken a backseat for now, I dont intend to get rid of it, I have fond memories of my time with it exclusively, it still offers pentode tube rolling but for now its not the focus. I dont even have it setup currently, I'm getting another HiFi stand to accomadate having both amps available at the same time.
 
Feb 5, 2024 at 6:09 PM Post #1,875 of 1,937
I didnt sell mine I just bought a HA-300MKII so the 6A has taken a backseat for now, I dont intend to get rid of it, I have fond memories of my time with it exclusively, it still offers pentode tube rolling but for now its not the focus. I dont even have it setup currently, I'm getting another HiFi stand to accomadate having both amps available at the same time.
I tested the HA-6 and 300MKII, both with stock tubes, and there was a slight advantage for the 300.
My order for the 300 was already out, then I saw that I still need min. 3k+ for good tubes. I said to myself "what " :scream:- case closed ^^
The HA-6A is my endgame and will stay with me until the last day.
 
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