Cayin HA-6A Tube Headphone Amplifier (KT88 and EL34) with XLR4 and 4.4mm Impedance Matched Output
Oct 7, 2021 at 5:26 AM Post #856 of 895
Joined
Nov 16, 2013
Posts
5,629
Likes
7,346

Andy shared this picture in the Ha300 thread.

Thought I'd post it here since there is also a Black Ha-6A on the horizon.

Not sure if it's just the color or a Mk2 Kind of deal.

If it's Mk2 I'd really hope for Support up to KT170

Thank you for sharing the photo.

Unfortunately, we don't have a HA-6A MK2 in our development plan, and we don't have any plan to use KT150 or KT170 in our tube headphone amplifier in foreseeable future. :beerchug:
 
Cayin Stay updated on Cayin at their sponsor profile on Head-Fi.
 
http://en.cayin.cn/
Oct 8, 2021 at 5:16 AM Post #858 of 895

ThanatosVI

Headphoneus Supremus
Joined
Jan 11, 2018
Posts
4,070
Likes
4,111
Location
Germany
Oct 15, 2021 at 9:28 AM Post #859 of 895

krude

100+ Head-Fier
Joined
Jun 29, 2021
Posts
107
Likes
141
Location
Poland
I've got my HA6a for a few months now and decided to share my thoughts.

TL;DR I love it :D

a bit longer bit ... I use it with Utopia (for listening) and HD800 (for playing guitar), I mostly listen to hard and dynamic music, metal, rock, electronica, but also soundtracks, acoustic and bits of classical now and then, and for dynamic music it knocks it out of the park with Utopia. I use Holo May L2 as source, but tried it with Hugo 2 and it was still really good.

All 3 impedance settings are amazing, triode mode and UL are amazing, the slam, the punch, the smoothness, the bass ... drum impact, staging ...

It was a bit noisy at first but now after it (and tubes) burned in (use it with stock tubes in KT88 mode) it is pretty silent (for a tube amp).

Anyway, Utopia and HA6a is one of those pairings that blows my socks off every time I fire it up.
 
Last edited:
Oct 15, 2021 at 5:01 PM Post #861 of 895

kimdeug

100+ Head-Fier
Joined
May 14, 2019
Posts
130
Likes
236
Location
New Zealand
I got my HA-6A three days ago. come with JJ 12au7

I use it with Beyer DT1990 .
i found HIZZ noise from 1/4 on minimal volume. more found in UL mode
I test on Unplug everything. No any inputs. Only Power cable.

what should i do
1. Try to do paper box test, I have described last page. To eliminate the ambient interference.
2. Try to roll 12AU7 tubes.
3. Give around 100 hours burning time.
4. Check the supply power and cable.

Regards,
Kim
20211016_095209.jpg
 
Oct 15, 2021 at 5:08 PM Post #862 of 895

ThanatosVI

Headphoneus Supremus
Joined
Jan 11, 2018
Posts
4,070
Likes
4,111
Location
Germany
1. Try to do paper box test, I have described last page. To eliminate the ambient interference.
2. Try to roll 12AU7 tubes.
3. Give around 100 hours burning time.
4. Check the supply power and cable.

Regards,
Kim20211016_095209.jpg
The Ha-6a does look gorgeous.
Those are socket savers on your 12au7 right?
 
Oct 15, 2021 at 6:06 PM Post #863 of 895

kimdeug

100+ Head-Fier
Joined
May 14, 2019
Posts
130
Likes
236
Location
New Zealand
The Ha-6a does look gorgeous.
Those are socket savers on your 12au7 right?
Yes. They are socket savers. Because a lot of 12Au7 tubes have more thicker pins.
Socket savers: https://www.aliexpress.com/item/1005003234451973.html?spm=a2g0o.cart.0.0.2eaa3c00bQWQTk&mp=1
Aluminium rings: https://www.aliexpress.com/item/4000012197427.html?spm=a2g0o.cart.0.0.2eaa3c00bQWQTk&mp=1

I have contacted to Poland Miltra manufacture to buy only 2 aluminium rings for my Cayin HA-6A.
Lets see: https://www.miltra.pl/index.php/produkt/headphone-tube-amplifier-miltra-otl-pcl86/
 
Oct 17, 2021 at 3:45 AM Post #865 of 895

kimdeug

100+ Head-Fier
Joined
May 14, 2019
Posts
130
Likes
236
Location
New Zealand
today i just got Arya.

hiss noies has disappeared.

I think my dt1990 have 109db is very sensitive with tube amps
I am using my DT1990 pro with Cayin HA-6A now. Middle impedance, 1/4 jack, volume 9 o'clock. No hiss at all. No music, volume at 3 o'clock -- I can hear the tubes humm, but very little and it can be neglected. At real usage situation I never go above 9 o'clock.
 
Oct 18, 2021 at 11:20 PM Post #866 of 895

kimdeug

100+ Head-Fier
Joined
May 14, 2019
Posts
130
Likes
236
Location
New Zealand
Let me know how you get on. I won't be changing anything for a while as I don't want to rock the boat, but it'll be good to know what fuses you find work best

I am very skeptical about this upgrade.
Just have few Aliexpress vouchers to burn before 11.11
Lets see, what is this hype about.
Have ordered these fuses:
https://www.aliexpress.com/item/1005002559074708.html?spm=a2g0o.detail.1000014.13.4aca7afdM0volt&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.13338.183347.0&scm_id=1007.13338.183347.0&scm-url=1007.13338.183347.0&pvid=ebabe69b-d581-4139-bf26-b5e85f6f1d51&_t=gps-id:pcDetailBottomMoreOtherSeller,scm-url:1007.13338.183347.0,pvid:ebabe69b-d581-4139-bf26-b5e85f6f1d51,tpp_buckets:668#2846#8109#1935&&pdp_ext_f={"sceneId":"23416","sku_id":"12000021138642122"}

Regards,
Kim

Screenshot 2021-10-19 162813.png
 
Last edited:
Oct 31, 2021 at 11:22 AM Post #868 of 895

kimdeug

100+ Head-Fier
Joined
May 14, 2019
Posts
130
Likes
236
Location
New Zealand
Hifiman Arya
If I use the middle gain, will there be a problem with the headphones or the amp?
Not for amp, but for headphone it is not good. It is designed for optimal impedance 41Ohms. Better to use it on low impedance setup. If you put too big impedance you will burn/ damage the wire coil on magnet drivers.
 
Nov 3, 2021 at 1:06 AM Post #869 of 895

Lapinata

New Head-Fier
Joined
Oct 17, 2021
Posts
6
Likes
8
Location
Suratthani, Thailand
Hi, I am totally a newbie to this hobby, never had any tube amp before. After spending hours on this forum I decided to purchase HA-6A. It has been 20 days of usage, burning period probably completed :dt880smile:

So far I am in love with it. I do hear the hissing like many of you, but it is less noticeable when playing the music. Start hearing it when turning volume more than 10 o'clock, when reaching 2 o'clock it becomes unbearable (I will never reach that anyway, just do for the sake of testing)
*Test with Beyerdynamic DT990 Pro - Medium - 6.3 output*

Overall, I am pretty content with what I get from this unit. I decided to stick with EL34 because of its sweetness. Now, I'm aiming for the sound that gives me more diabetes. XD Willing to upgrade both JJ 12AU7 and EH EL34. Gold pin 12AU7 is very attractive to me.
Any recommendations ?? I would love to see the comparison between each brand as well since I am new here.
Oh...and the budget would be around $150 for each pair
 
Nov 3, 2021 at 2:35 AM Post #870 of 895

kimdeug

100+ Head-Fier
Joined
May 14, 2019
Posts
130
Likes
236
Location
New Zealand
Hi, I am totally a newbie to this hobby, never had any tube amp before. After spending hours on this forum I decided to purchase HA-6A. It has been 20 days of usage, burning period probably completed :dt880smile:

So far I am in love with it. I do hear the hissing like many of you, but it is less noticeable when playing the music. Start hearing it when turning volume more than 10 o'clock, when reaching 2 o'clock it becomes unbearable (I will never reach that anyway, just do for the sake of testing)
*Test with Beyerdynamic DT990 Pro - Medium - 6.3 output*

Overall, I am pretty content with what I get from this unit. I decided to stick with EL34 because of its sweetness. Now, I'm aiming for the sound that gives me more diabetes. XD Willing to upgrade both JJ 12AU7 and EH EL34. Gold pin 12AU7 is very attractive to me.
Any recommendations ?? I would love to see the comparison between each brand as well since I am new here.
Oh...and the budget would be around $150 for each pair
Congrats. If you like sweet sound try the Sylvania 12AU7 NOS, They are very cheap around 10$ each green print. British made tubes Mullard, Brimar and CV.4003... not sure as do not remember the number are also sweet and soft. Do not be fullished by gold pins, like reissued JJ or ElectroHarmonics or Genalex or chinees Psvan gold pins tubes. They are looking nice, but is it all about the sound? I am listening with Tesla ECC802S now, and they are so close to 10 times expensive Telefunken E82CC. Regards, Kim

PS, for EL34 rolling try Reissued Russian Genalex KT77 tubes.
 
Last edited:

Users who are viewing this thread

Top