I�ve previously explained how I was able to establish performance differences between an ID40 and ID41 in an 861v6 with v8 Firmware.

Use my network to generate high RFI levels (video streaming and file copying)... and take none of the �prevention� steps outlined above (separate switch, SSTP cable etc., etc.)... and then it was quite easy to hear a difference between the ID40 and ID41 (likely due to the Ferrite and other filtering built into the ID41, reducing RFI entering the 861v6).

However, reinsert the dedicated Switch and SSTP cabling reduced those observed differences to very little.

Bringing the Network activity and data transfers back down to a �normal' level, further reduced any differences to borderline negligible.

Summary
RFI can be used in a test to make it appear like the Cable is the �saviour�.

But your friend can be reassured that the Streamed Music via Ethernet was being received 100% Intact and 100% Integral by the Endpoint... if it wasn�t then he would have heard obvious dropouts... not just perceived �differences".

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