Sorry but it's just struck me how nonsensical that is - you don't believe they make a difference, then listened to some and believed they didn't, and proved it? I.e.,You're arguing that it's all expectation bias, but you apparently decided that expectation bias doesn't apply to you (i.e. that your expectation they wouldn't work didn't affect your listening tests proving they didn't)?

Now I'm really confused.

HC: 861v4/ID40/LPS, DSP5000, DSP5000VC, DSP3100, SW1600, HD621, Oppo BDP-105, Sony VPL-HW55ES
2-Channel: Oppo BDP-105, TEAC VRDS-7/Trichord Clock 3/PSU, 551, Quad 303, Harbeth Compact 7ES-3, Kimber cables, Russ Andrews mains and supports.
Previous Meridian: 5000C, 5200SL, 7200.2, 6000, 562V.2, 568.2mm, 800v4, 808.2i, 818v2/v3, 861v8, 502