Mr. glupson
Gentlemen don't argue about facts and feelings. So as a fact, 1.5% THD is not good. If someone likes it – Shall it be.
Audio as a concept has two ways to go:
The first would take the challenge to try reproducing the source as close as possible.
The second would claim, that this goal can't be achieved, so let's go for a sound we like.
I'm Ok with both ways to some extent.
It is hard for me to like a sound that I know up front it is contaminated with "bad" stuff:
High THD, high IMD, high background noise, limited bandwidth, limited dynamic range, bad DF etc'. Than when we go for tube it is also a life cycle that could be different by the day. I liked it so much last week but since, I can't get again the same sound…
At the same time, it is impossible to claim that a 1.5% THD is loyal to the origin! The origin had no THD. This figure is mostly get bigger as some is coming from vinyl with 3.5-5% THD and goes to a speaker that might have some THD too. Yes, people like it. I don't.
I've heard a say after a live concert that the piano sounds better on his system! Well, is it good for him, or not so good for him?