Sorry, but this is completely incorrect. The EE8 and Bonn8 have milled aluminium cases with no slots in the sides. Not simples.guys this hypothesis is really easy to test.
Take a Bonn8/EE8 and zyxel gs-108b v3 and with the SAME POWER SUPPLY do some A/B testing. The only difference is the clock board. Simples.
Oh, and you forgot to say same cables as well as same PSU; the EE8 comes with a non-standard (non-CAT) cable. I presume this is what you meant but for avoidance of doubt and all that.
Have you heard the Zyxel vs either of these? Do they sound better to you? I have heard the EE8 and it does indeed sound better than the the Zyxel to my ears.
That’s a great starting point, then as above we’re just discussing cause and effect. Politely, natch.