Cayin HA-300MK2 (2022) TOTL Transformer coupled Direct Heated Triode Tube HeadAmp (Page 91)
May 6, 2024 at 6:08 AM Post #6,316 of 6,326
Nice! I figure with a tube collection like you, you probably have all the one's I am lusting after at the moment like Mullard EL37, EL38. GZ34 Metal Base. . .

The output impedance of the Aegis isn't an issue with the CC, or Bokeh, of which both have lower impedance.

I have a preproduction Aegis, so the color of my unit is not what people will be getting, but here is a picture of the Caldera Closed and Aegis. The pairing is something special.

1000005308.jpg
Looks like a great set. I have some experience with 6SL7 and 5R4GY (prefer using 274B) and you will have a lot of fun with rolling. Please let me know if you find any 6SL7 quad alternatives : )
 
May 6, 2024 at 6:15 AM Post #6,317 of 6,326
I have a Feliks Audio Elise at the moment, which does not get hot at all, just a little bit warm, that's why I am asking. Not sure what people mean with "hot" in regards to the HA300 :)
You wouldnt want to touch ANY of the tubes whatsoever. They are red hot, not warm. Cayin is a Class A design so i understand so its always FLAT OUT.
 
May 7, 2024 at 7:40 PM Post #6,318 of 6,326
Are you guys using socket savers for the 6sn7 or 300b tubes ? I rarely take out my 300b tubes so that's probably fine but I do switch the 6sn7's occasionally like maybe 1-2 a week or something. Wondering if I should be using socket savers or not 0_o
 
May 7, 2024 at 8:01 PM Post #6,319 of 6,326
Are you guys using socket savers for the 6sn7 or 300b tubes ? I rarely take out my 300b tubes so that's probably fine but I do switch the 6sn7's occasionally like maybe 1-2 a week or something. Wondering if I should be using socket savers or not 0_o
No and it just adds to the connections and never had issues, in over 40 years.
 
May 8, 2024 at 10:43 AM Post #6,320 of 6,326
Does have an issue with their unit not having volume on lower levels? My potentiometer doesn't seem to output at position 1 & 2. Volume output only starts at 3.

I'm running the Topping A90 as a pre-amp via XLR. Using high gain and cranking the volume to max does nothing.
 
May 8, 2024 at 10:51 AM Post #6,321 of 6,326
Does have an issue with their unit not having volume on lower levels? My potentiometer doesn't seem to output at position 1 & 2. Volume output only starts at 3.

I'm running the Topping A90 as a pre-amp via XLR. Using high gain and cranking the volume to max does nothing.
You mean bottom of the volume knob? If you have a pre for me it works better (better SQ, might be subjective tho) to have volume on HA300 open (3pm) and control the volume via pre.
 
May 8, 2024 at 11:20 AM Post #6,322 of 6,326
You mean bottom of the volume knob? If you have a pre for me it works better (better SQ, might be subjective tho) to have volume on HA300 open (3pm) and control the volume via pre.
Yeah the bottom steps for the volume don't output any sound at all.

I usually run my HA300 at 9pm and have my A90 set at 12pm for basically everything I plug into it, and it works fairly well. I just had to run the amp at a lower volume to listen for the door and noticed the issue.

It's not a big issue, but it's slightly frustrating given how expensive this amp is.
 
May 8, 2024 at 11:24 AM Post #6,323 of 6,326
Yeah the bottom steps for the volume don't output any sound at all.

I usually run my HA300 at 9pm and have my A90 set at 12pm for basically everything I plug into it, and it works fairly well. I just had to run the amp at a lower volume to listen for the door and noticed the issue.

It's not a big issue, but it's slightly frustrating given how expensive this amp is.
IMHO it’s not an issue at all.
 
May 9, 2024 at 11:33 AM Post #6,324 of 6,326
170HA Susvara 01.jpg


Cayin finally unveils the Soul 170HA at Munich High End 2024 today. Weighted at 40kg, this is the biggest headphone amplifier we have ever built.

Check out the Soul 170HA thread if you want to find out more about this crazy beast. :beerchug:
 
Cayin Stay updated on Cayin at their sponsor profile on Head-Fi.
 
http://en.cayin.cn/
May 9, 2024 at 11:38 AM Post #6,325 of 6,326
170HA Susvara 01.jpg

Cayin finally unveils the Soul 170HA at Munich High End 2024 today. Weighted at 40kg, this is the biggest headphone amplifier we have ever built.

Check out the Soul 170HA thread if you want to find out more about this crazy beast. :beerchug:
What is the price?
 
May 9, 2024 at 1:45 PM Post #6,326 of 6,326

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