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Cayin HA-2A, Compact Tube Headphone Amplifier
Apr 6, 2024 at 4:33 PM Post #91 of 104
aaronhaynes101 said:
My 2A is sliver and my 3A is black. It worked well because I had a sliver and black bifrost already. I really like the looks of the black but it is a bit of a finger print magnet. Black was not available when I ordered either.
Click to expand...
Thank you, my bad eyes, from the picture it kind of looked like the black was the smaller 2A. I think there was mention from Cayin that there may be black versions coming later.
 
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Apr 6, 2024 at 4:47 PM Post #92 of 104
These are probably a little better to the size difference.
PXL_20240309_234828872.jpg
PXL_20240309_234822706.jpg
 
Apr 7, 2024 at 11:43 AM Post #93 of 104
I like that the 2A is not a glossy case but more of a matte finish. The silver looks really good also. Somehow the 2A looks cleaner than the 3A overall.
 
Apr 8, 2024 at 1:28 PM Post #94 of 104
AndyKong: I think there is a mistake in the specs for the HA-2A in the first post you made introducing the amp. Under the tube specifications, it says ECF82/6U8 can be substituted with ECF82/6UG. As far as I can tell, there is no 6UG tube. I think it should read ECF82/6U8 for both lines.

But what about the 6U8A? All the tube manuals I have seen list the 6U8A as a sub for the 6U8. And true 6U8 tubes are hard to find while 6U8A tubes are much easier to find. Should the specs for tube substitution list both the 6U8 and the 6U8A?
 
Apr 13, 2024 at 12:03 PM Post #97 of 104
dpump said:
AndyKong: I think there is a mistake in the specs for the HA-2A in the first post you made introducing the amp. Under the tube specifications, it says ECF82/6U8 can be substituted with ECF82/6UG. As far as I can tell, there is no 6UG tube. I think it should read ECF82/6U8 for both lines.

But what about the 6U8A? All the tube manuals I have seen list the 6U8A as a sub for the 6U8. And true 6U8 tubes are hard to find while 6U8A tubes are much easier to find. Should the specs for tube substitution list both the 6U8 and the 6U8A?
Click to expand...

I checked the original Chinese user manual and confirmed that the English specification was wrong, thank you for pointing this out, I stand corrected.
:beerchug:

HA-2A Specification - Tube Substitution.jpg
 
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Apr 18, 2024 at 12:28 PM Post #100 of 104
Apr 18, 2024 at 1:21 PM Post #102 of 104
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