While it's true that the RT25s are no chest thumpers when it comes to bass, the good news is that they don't pretend to be. This gives them a wonderfully natural midrange which never adds any artificial chesty-ness to male vocals. It also makes them a great match for a sub-woofer, but more on that later. Speaking of the RT25s midrange, this is the area where the speakers really excel. It's clean and articulate and amongst the most uncolored that I've ever heard in its class.
Vocals are clean and articulate and instrumental timbre is outstanding.
Tonal balance is a tad on the brighter side of neutrality but never makes it into the truly bright category, instead it lends an energetic quality to the presentation. Treble performance is the area in which the speakers suffer most to more expensive competition, but it's truly excellent for the RT25s asking price. Like the speaker as a whole, the treble isn't audio perfection, but it is presented effectively and pleasingly. While it doesn't exactly give cymbals the shimmer of your average electrostatic, neither is it hard, brittle or splashy. Its major omission is more a lack of subjective extension, but as far as it goes, it's quite agreeable.