HiI currently own Rotel RA04 amp and Rotel RC06 CD Player with BW 685 speakers. The amp has two speaker outs and the speakers are bi-wirable. In effect, does this mean I use the two speaker outs as a way of Bi Amping the speakers or am I wasting my time and money on two runs of cable. I am looking to add sparkle to the system and upgraded from QED silver xt cable to Chord rumour 2 (install) however i don't notice a difference. If anything the Rumour 2 is lacking in the low frequencies. I welcome any suggestionsThanks in advanceDan Harling