I had the Trenner & Friedl Suns on home audition when I was setting up my nearfield system a few years ago. I felt that the volume needed to be turned up to a moderate level before they came to life, notably the bass. Nearfield is close range playing at lower volume, which made them sound thin and undynamic. I feel that they are better suited for midfield listening (at least 6 ft), driven at a higher volume.
You should audition them and see if they would work out for you. If you are in the US, ask T&F's distributor Profundo (https://profundoaudio.com/contact-us) about dealers in your area and options for auditioning.