Cayin iHA-8: Fully Balanced "Hyper" Class-A Headphone Amplifier

Feb 9, 2025 at 4:10 PM Post #256 of 300
Thanks for the feedback.

I am not really looking for features, just really looking for the best sound.
I know the A70 is the most powerful but i understand all of them have a lot of wattage to spare.

So im kinda looking for the sound differences between all of them, without a preamp in the mix using the built in pots.
 
Feb 23, 2025 at 12:01 PM Post #257 of 300
My IHA-8 volume knob has developed a terrible noise and a tacky feel all of the sudden.
The feel of turning the knob is extremely unpleasant, it feels like its stuck in the beginning and it makes this screechy, bright noise.
I since moved on using it on a PRE-mode and controlling volume from the dac since I dont wanna touch the volume.
Anyone else had this? Any advice appreciated.
@Andykong is this something that will be accepted as a warranty fix?

I filmed a short demonstration of it. Might have to turn up the sound a bit to hear. Caught a particularly nasty one at 0:14.
 
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Feb 23, 2025 at 3:22 PM Post #258 of 300
My IHA-8 volume knob has developed a terrible noise and a tacky feel all of the sudden.
The feel of turning the knob is extremely unpleasant, it feels like its stuck in the beginning and it makes this screechy, bright noise.
I since moved on using it on a PRE-mode and controlling volume from the dac since I dont wanna touch the volume.
Anyone else had this? Any advice appreciated.
@Andykong is this something that will be accepted as a warranty fix?

I filmed a short demonstration of it. Might have to turn up the sound a bit to hear. Caught a particularly nasty one at 0:14.

I definitively don't have that problem with my iHA-8, yes there's a little bit of resistance when you go from notch to notch in the volume pot, but it doesn't make that clicky sound and it's smooth to move from notch to notch, there's something wrong with your unit.
 
Feb 23, 2025 at 6:17 PM Post #259 of 300
Everything works fine here, too.
No "sounds".
It works just fine.
Up to now...
 
Feb 24, 2025 at 12:39 AM Post #260 of 300
My IHA-8 volume knob has developed a terrible noise and a tacky feel all of the sudden.
The feel of turning the knob is extremely unpleasant, it feels like its stuck in the beginning and it makes this screechy, bright noise.
I since moved on using it on a PRE-mode and controlling volume from the dac since I dont wanna touch the volume.
Anyone else had this? Any advice appreciated.
@Andykong is this something that will be accepted as a warranty fix?

I filmed a short demonstration of it. Might have to turn up the sound a bit to hear. Caught a particularly nasty one at 0:14.

The iHA-8’s volume knob should behave as Erick Muller described, what you’re experiencing is definitely unusual.

And this absolutely qualifies as a warranty fix. Please reach out to your place of purchase, they'll assist you with the repair process.
 
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Mar 1, 2025 at 4:34 AM Post #262 of 300
I have an iHA-8 incoming, I will be putting out a video (and written) review in the next few weeks. :)

It's pretty crazy there is almost nothing out there on this amp!

@Gold Fox Do you think I can ask you a few questions about the unit? I have a couple in my mind, and I'd love to go a bit deeper in the deisgn choices Cayin made for the iHA-8.
 
Mar 3, 2025 at 12:26 AM Post #263 of 300
I have an iHA-8 incoming, I will be putting out a video (and written) review in the next few weeks. :)

It's pretty crazy there is almost nothing out there on this amp!

@Gold Fox Do you think I can ask you a few questions about the unit? I have a couple in my mind, and I'd love to go a bit deeper in the deisgn choices Cayin made for the iHA-8.
Certainly! Feel free to ask!
 
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http://en.cayin.cn/
Mar 3, 2025 at 12:36 AM Post #264 of 300
Pre-amping my iHA-8 with my TA-88 and controlling the volume from the tube amp and listening to my HEKse is something out of this world.

IMG_6976.jpg
 
Mar 22, 2025 at 2:45 PM Post #265 of 300
Hello everyone,
I enjoyed your deep insight on the iha-8, as far as i understand, it's excellent
Now has anyone compared it to the schiit Mjolnir 3 or the Gustard H26?

I have had the MJ3 a few times and now a Black iHA-8 in house. With the Abyss JOAL, I think they are more similar than different for certain except that I would say with Hyper Mode on and high gain I might find the iHA-8 with a bit more separation of sounds, cleaner I guess is the best word to use for what I am hearing.

The MJ3 is also a really really good preamp but the iHA-8 looks so much better to my eyes for whatever that is worth to you. They both get WARM being class A, I'd say very similar temp without measuring directly.

Updates picture of desktop stack at home office:

APC_0514.jpeg
 
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Mar 31, 2025 at 1:41 PM Post #267 of 300
tell us more! :) what's the advantages ? what about the iha8 as main amp for the hekse? thank you
It's really, REALLY good.

What I've been testing right now it's how does this amp pair with different dacs, all of the R2R at this point, for starters, there's really not a bad pairing when it comes to R2Rs with this amp, from the very affordable Fiio K11 R2R, to the hifiman goldenwave serenade and all the way up with the Cyan 2. The stand out here is the Cyan 2, it's the blackest background I've heard up till now, going straight USB into the Cyan 2 from my gaming rig and even using my OTL tube amp to pre-amp, unless I go into high gain on both the TA-84 and the iHA-8, then some noise starts to creep in but that's just the nature of tube amps, they're inherently noisy things. The serenade adds a little bit more warmth to the sound, it has a little bit more grunt in the low end in comparison to the Cyan 2, but it doesn't have the black background of zero noise in comparison to the Cyan 2 and it doesn't have the same technical chops of the Cyan 2, tonally they're similar but the Cyan 2 it's a little bit more natural sounding, the serenade it's a little bit more intense because it has a little bit more intimate soundstage. The Fiio K11 R2R is the noiser of all, it's it just doesn't compete against the Cyan 2 or the serenade, but it's a really competent DAC/Amp, it just doesn't have the same level of resolution and details but it makes it up with warmth and tonality, but in a pinch, you could get this dac and it will pair well with the iHA-8.

With my HEKse, I'm currently using ZMF Hybrid lambskin pads for it, so it tames the treble forwarness and adds a good amount of bass, specially mid bass, so it gives the HEKse an almost DD driver quality to the way the HEKse hits with drums in particular, very natural and impactful, a more dynamic presentation of the sound. With the iHA-8, I'm currently pre-ampinig it with my OTL tube amp, the TA-84 with PSVANE art series tubes, so this add even more warmth and a hefty bass boost and it rounds off some of the treble. The iHA-8 it's being run on hyper mode and high gain, controlling the volume directly from it and I have found that this is the best way to first, reduce background noise and second, it again adds a little bit more warmth and naturallity to the sound of the HEKse and any other headphone for that matter, the bass is well exended and impacful, treble is well represented, under control, it's not going to color it to much or round it off, if the track is bright on the treble, it's going ot come through the headphone, the mids are really well represented, I'm not getting a lot of glare or shoutyness(again unless the singer and/or the mastering and mixing was done that way), but even if it's not the best of recordings, it's not making it edgy or making me cringe, it's relatively smooth sounding for as much as the HEKse can be say to be smooth.

With my current setup it has made it that for me right now, the HEKse is EQ optional, and so for my Focal Clear, my LCD-X 2021 I still have to EQ it, it's just to recess in the upper mids-lower treble and it just doesn't hit that hard on the bass without EQ, it tends to sound bland and boring in comparison to other headphones I have. The HD800S sounds really good from the iHA-8 but I prefer to listen to it directly from my OTL tube amp, it just pairs better with it, but thats another headphone that I have to EQ, mostly because of the very intense treble peaks that headphone has, planning on listening tomy LCD2Cs with dekoni microsuede pads and also throwing the Arya Organic for a listen soon.

The iHA-8 for me is the best SS amp I have tried yet, it does get very warm, like even warmer than my previous SS amp, the Aune S17 Pro, it doesn't have a remote or pre-outs, it's just a headphone amp, but it does this incredibly well and it's a noticiable improvement over the S17, I'm just amazed that there are not many proper reviews of the this amp still to this date. It strikes a really good balance between sounding neutral and natural while adding a little bit of spice to the music, not over doing it, it will reveal differences between different chains and in this way it's really transparent amp, it does have some limitations, but if it fits your use case and as long as you take into account that caveats that come with this amp, then I think this could very well be the last amp you buy. I havent tried really super demanding headphones like the OG Susvara or the ModHouse Tungsten, so I don't know how well will it handle this kind of loads, the hardest thing to drive that I have in my collection is the DT880 600 ohm and this amp drives it well enough but I do need to cranck up the volume and go high gain, hyper mode on to drive it properly, also another thing that I have noiticed with this amp is that it can take a lot of gain from a pre-amp, so this can defenitively help in driving those headphones that are a little bit more demanding.
 
Apr 1, 2025 at 2:22 AM Post #269 of 300
@Erick Muller thanks for sharing... I have been circling the iHA-8 for a couple months now, but have been a bit surprised at the lack of impressions I've found online. That's both good and bad, IMO. If nothing else, there's no amped-up (pardon the pun) hype train here! :laughing:
As you’ve seen, the iHA-8 is a bit like a craftsman—quietly doing its job with focus. Everyone who’s used it in this thread has had nothing but praise, but beyond this post, the attention isn't that high... :weary: As you said, that’s both a good and a bad thing.

That said, if we come across the appropriate reviewers, we’d definitely be happy to expand the number of reviews out there, so more people can see a broader spectrum of feedback.


Also, @erick Muller—huge thanks for always taking the time to write such detailed impressions and help others out. 🙏

I can really tell you truly love the iHA-8, your passion really shows!
 
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Apr 1, 2025 at 9:29 AM Post #270 of 300
I'm also surprised by the lack of reviews and impressions that are available for this product. Would be great to see at least one more review with comparisons to other Cayin amps (HA-2A specifically) and competitors like the Violectric V222.
 

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