The summary from the German review translated by Google:
The Bryston 7B³ are characterized by ...
a) the proof that "real" transparency and transparency are absolutely music-worthy or promote long-term capability - the Canadians are exceptionally subtle-silky and are among the most transparent and translucent amps I know.
b) tonal neutrality.
c) an equally "fast" as unencumbered enemy dynamics.
d) a bass range, which leaves no doubt about the draft, energy content and rough dynamics, that mature transistor monos are at the start, but the 7B³ make it rather jagged-fluid flutschen than that they push massive and deep black.
e) a linear, airy, precise, at the same time well-integrated, organic-sounding tonic.
f) highly differentiated mids without any special sound design - no extra dose of comforting warmth and indulgence, but also no exaggerated coolness.
g) a class-appropriate, official stage illustration. However, the way in which even the subtle and short (transient) components of the music are given a plastic life of their own deserves an extra applause in this price class as well.
h) an absolutely robust, high quality, but not exactly glamorous workmanship.
i) energy efficiency still acceptable for monos of this design and performance class (75 watts each at idle).
Points c), d), and g) might have become a bit lost in translation, but it appears that the reviewer is buying the amp. "the 7B³ have been playing with me for over eight months and will remain permanent."
Overall, the 7B3 amazing amps. Plan on using my pair until the warranty runs out.