how long is the break in for Furutech GTX-R?

well,after 30-40 hours the GTX-R still sound slow,heavy,lack of dynamic...

it will be better ...?
Have you connected all the wires correctly?. The GTX-R tranced the Oyaide R-1 even when new and slightly better than the SR Tesla Plex-SE in my system.
Did you buy the GOLD version of the GTX?
Eventually, you'll get used to it...
Rush it back to the dealer, you were rip off, big time.
Have you tried the Maestro ac outlet yet ???