I am writing this review after having had the opportunity to listen to a comparative listening time (~ 1 hour).
Big fan of PMC TB2 and owner, I was very impressed with the GT1, which seem to be a notch above.
The definition of instruments, stamps and placement in the soundstage are simply amazing for speakers of this size.
The grave was very present and very neutral color. Icing on the cake, they seems very tiring to prolonged listening, which is part of the points that make me love my PMC TB2.
A quality / price ratio that seems quite balanced, a pair of speaker that you absolutely must listen to if you looking for library size speakers for hi-fi but also the mixing work. In fact when I listen, they did not at all ashamed to face the speaker to more than 40 000 euros the pair, given their definition and volume they supported.
FYI, the French brand is HP and manufactures its own side of Besançon. It offers also the DIY kit to buy ...