First impression -although no burn in yet- is that the sound-stage opened on both ends. Warmer deeps, highs have better resolution. Due to lack of space one of them was possible to fit in with removed cover only (with the supplied extra socket the assy would be too high. Apparently the pins of the V6 are a bit broader than the pins of the dual OPA627 used previously, the sockets has been stretched by the V6, the OPA627 doesn’t fit as tight in the original socket as before.