Listening will only tell you what *you* think of it, i.e. subjective
evaluation.

Exactly. That's how most people evaluate products.

That is no reliable measure of 'goodness' whatever as easily can be seen from
those who think SET tube amps are great despite shocking failings wrt precision
and linearity. Graham

Many SET amps sound very good.

please learn to quote properly btw

please learn to be more flexible and stop demanding that other people
obey your own views.