The fundamental flaw (well, a few of them really) in A/B, B/C, C/D andso on comparative group testing of audiophile products

By A/B conventionally applied I mean the same musical phrase, bar or track used to demonstrate the differences between (say) any two pairs of speakers (or DACs or whatever) where the total number of similar components on demonstration is 2 + n, where n = any number and where the process is carried out too quickly.

There are 6 key errors of judgement in the conventional method of selection of any two or more items such as cars, washing machines and so on in the audiophile field, or when choosing a one night stand or long term partner for instance in the human arena. Anyway, focusing on audiophile equipment, here are the first 2