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Anthem AVM70 Review (AV Processor)

Dj7675

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One thing to know is JBL refuted Amir’s measurements, and released a doc going over their own measurements which were much better. Someone sent me it, but I’ve lost the link . So keep that in mind. I bought the SSP-55 anyways and love it.
I believe @amirm noted the following:
”And this is the problem with this design. One has to design knowing that HDMI connection and bring with it, its own source of noise. My computer USB port is also very noisy but we don't see that impacting hardly any DAC I test. Here, I have had tons of other processors and AVRs on the same setup with no noise issue over HDMI. Yet all of these Arcam based products suffer from this problem. And the company on purpose avoids testing them this way by using a portable, floating HDMI source.”

If that is how their tests were conducted, it doesn’t seem like a real world test to me… HDMI shouldn’t have to be tested in this manner to get better results IMO (if I am understanding it correctly)
 

andrewskaterrr

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I believe @amirm noted the following:
”And this is the problem with this design. One has to design knowing that HDMI connection and bring with it, its own source of noise. My computer USB port is also very noisy but we don't see that impacting hardly any DAC I test. Here, I have had tons of other processors and AVRs on the same setup with no noise issue over HDMI. Yet all of these Arcam based products suffer from this problem. And the company on purpose avoids testing them this way by using a portable, floating HDMI source.”

If that is how their tests were conducted, it doesn’t seem like a real world test to me… HDMI shouldn’t have to be tested in this manner to get better results IMO (if I am understanding it correctly)
I'd agree. At the same time, I don't hear any noise coming from my HDMI sources, even with my decently sensitive JBL 590s. If I did, I would've retuned it. So even if Amir's measurements are correct, it's past audibility for me.
 

Dj7675

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One thing to know is JBL refuted Amir’s measurements
I was was pointing out how they “refuted” which is not real world IMO. Audibility will vary depending on use I’m guessing… how sensitive speakers are , how loud you listen etc. Very good to hear it isn’t an issue in your setup. I am guessing it wouldn’t be in most.
 

Krobar

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I believe @amirm noted the following:
”And this is the problem with this design. One has to design knowing that HDMI connection and bring with it, its own source of noise. My computer USB port is also very noisy but we don't see that impacting hardly any DAC I test. Here, I have had tons of other processors and AVRs on the same setup with no noise issue over HDMI. Yet all of these Arcam based products suffer from this problem. And the company on purpose avoids testing them this way by using a portable, floating HDMI source.”

If that is how their tests were conducted, it doesn’t seem like a real world test to me… HDMI shouldn’t have to be tested in this manner to get better results IMO (if I am understanding it correctly)

Using the PC/Laptop HDMI port is fine of comparison between products on this site and should not be changed at this stage otherwise it would invalidate comparisons. Where it presents an issue is most of the industry seems to use HDMI signal generators and when Amir's results are 2-4dB lower because of the PC/laptop port people then say the product did not meet spec in some cases (Which is not really true).
 

andrewskaterrr

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I believe @amirm noted the following:
”And this is the problem with this design. One has to design knowing that HDMI connection and bring with it, its own source of noise. My computer USB port is also very noisy but we don't see that impacting hardly any DAC I test. Here, I have had tons of other processors and AVRs on the same setup with no noise issue over HDMI. Yet all of these Arcam based products suffer from this problem. And the company on purpose avoids testing them this way by using a portable, floating HDMI source.”

If that is how their tests were conducted, it doesn’t seem like a real world test to me… HDMI shouldn’t have to be tested in this manner to get better results IMO (if I am understanding it correctly)
So I was thinking, "floating HDMI source". My Shield Pro 2019, Apple TV4K, Xbox Series X, PS5, PS4, Laptop, Nintendo Switch, Wii U, and RetroTink 5X-Pro are all not grounded, so these would be "floating HDMI sources" right? The only grounded device I have is my HTPC, and I have no noise issues with that either. So I'm not sure what to make of his statement.
 

Dj7675

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So I was thinking, "floating HDMI source". My Shield Pro 2019, Apple TV4K, Xbox Series X, PS5, PS4, Laptop, Nintendo Switch, Wii U, and RetroTink 5X-Pro are all not grounded, so these would be "floating HDMI sources" right? The only grounded device I have is my HTPC, and I have no noise issues with that either. So I'm not sure what to make of his statement.
I don't actually know for sure but the portable generator used is not a real world test condition. The receiver/processor should be immune to any source issues that there may be and it is not. Whether or not any issues show up in anyone's system would be completely unpredictable and shouldn't be as it should be immune to such issues. @amirm would be much better at answering this.

Edit.. the portable generator used for their tests that does not show issues is a battery powered unit which is why it gives a cleaner hdmi signal. Real world usage, that obviously wouldn't be the case.
 
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