HDMI isilencer

[Bretho72]

I bought a HDMI Isilencer a couple of months ago now and man I love this thing, I understand snake oil and all that stuff but I really do think that this does make an improvement depending on what it is used on. I have 3 multichannel playback choices, 1 is Apple TV, 2 is Zappiti neo media player and 3 is a PC running Roon core.
On Apple TV yes there is an improvement much more refined and less harsh sounding, on the Zappiti not so much difference still sounds a big boomy. On the PC running roon rock playing multichannel flacs and DSD this is really good, just sounds more refined. A very good investment.

 

[Steve Bruzonsky]

Jitter jitter go away, leave HDMI this day! Shades of Agatha (Marvel-Disney). If it works for you, it works. HDMI is a very jittery interface that certainly could have been way better designed from an electrical & jitter standpoint.

My Chris Stephen's Appletv-X (modded 2021 Appletv4k) with its own hand built linear power supply with short cable hard wired into the modded Appletv4k is another example with a very clean out HDMI interface.

 

[Bretho72]

My Chris Stephen's Appletv-X (modded 2021 Appletv4k) with its own hand built linear power supply with short cable hard wired into the modded Appletv4k is another example with a very clean out HDMI interface.

Yes agree, I have modded my own Apple TV with Apple TVx design.

 

[JediJoker]

If the difference is measurable, it may be audible. If it isn't measurable, and you're hearing a difference, that's placebo. I guarantee the recording and mixing engineers weren't worried about jitter in their chain; the mastering engineers probably weren't, either. So, why should you? As long as your cables actually meet specifications—and, unfortunately, many don't—you can rest assured that you're getting audibly transparent signal transmission. HDMI isn't such a broken interface that it needs fixing.

 

[LuvMyQuad]

Yes agree, I have modded my own Apple TV with Apple TVx design.

So even after the mods performed on your Apple TV 4K, the addition of the ISilencer provided a "much more refined and less harsh sounding" experience. I know the answer to this already, but i dont suppose you had a way to truly confirm this with any real A/B testing?

Sounds to me like the Apple mods fell a little short for ya.

 

[jimfisheye]

Anticipated first thoughts...
Extraordinary claims needing extraordinary evidence.
What's an explanation for why the industry would have an apparently easily cured shortcoming like this?

Then the expected first questions...
What's the definition of 'jitter' being talked about here?
I'm familiar with jitter in context of sample rate clocks. Lower jitter clocks are desirable in the AD and DA stages. Being that shuttling the digital data in between - as HDMI does - doesn't involve AD or DA, there's nothing beyond data being received or not. So what's the context here in digital data transmission over HDMI?

If there's noise (RF or something) getting into the HDMI line and causing errors or dropouts and this device filters RF noise and cures it, that would be solid. But then someone would say that instead of what sounds like a description of an analog stage process.

If the digital audio is audibly dropout riddled (but still staying connected and receiving) and the device cures that... Again, I'd expect to hear more than what sounds like a fidelity critique. I'd expect to hear a comment like "had serious static/dropouts before".

Does it strip out HDCP or something?