Warmth is a product of the lower midrange to upper midrange/lower treble balance. If the latter is elevated compared to the former the sound will lack warmth. It's more likely for audiophile targeted products to suffer from this lack of warmth which can be mistaken for increased transparency.
I've never associated transparency will a balanced frequency response. That's more like neutrality. Transparency has more to do with low distortion and quick transient response.
I've never associated transparency will a balanced frequency response. That's more like neutrality. Transparency has more to do with low distortion and quick transient response.