Woofie, again fair points,

Let me put this on it's head, after you last 'obsession' with dbt, we decided to try a different twist to it.

We set up a basic, £5k average system, completely covered (curtains, not blue though), the panel consisting of 5, 3 woman & 2 guys, selected their fave 5 pieces of music, we set the level in the mid point of the listening room to 89DB gave them 20 minutes of the own selected tracks (each time reset to 89db if it was out) in a random order.

We stated a *electronic component* would be subsituted at some point in the session (all other components remained the same), simple we asked them to answer 2 questions, which track was the *change* and what they thought was changed, IE CDP/AMP/PRE (we had 2 cdps going into the pre, indentical cables and mains+ mains filter).

First session we changed NOTHING, yet 2 panelists said track 4 was different and the thought the cdp had changed (that track had a higher mastering output on it  never happens athey all prefect  )

The next session 2 hours later, same 5 tracks just randomised again and level matched to 89DB, this time we made 2 changes, on track 2 we swopped cdp's (Arcam cd33 to Cryus 8), 4 people said a change, and 3 got the piece of kit right, yet the others heard no change.

On track 5 we changed a cable on the Cryus 8cdp, 4 said a change and 1 said amp the rest cdp again.

Last session late in the day 5pm ish

This time same tracks just suffled about lebvel matched to 89DB again, same premise to the panalists, this time we changed the power leads on track 2 (cdp/amp/pre), they all got the change, yet they all thought it was the amp had been changed, what does this prove?, what ever you want it too.

Ears are the final tresting we do, if we don't like it, then it's no go.

have a good day gents