J_evege, the Accelerator takes some time to open up and burn in even with the treble. My pair took about 300-500 hours for the treble to smooth out. I heard from others the same experience.
The cables are directional and have arrows. It is important that you install them correctly. No, it should not matter which coupler plugs into the cable. Many said that SR cables improve with the Quattro that can power all the cables. I use a PS Audio Power Plant Premier and have the couplers plugged into regenerated power. There was an improvement in supplying better power to the cords.
Give SR a call they are very nice and love taking about their cables and giving tips on how to improve the sound.
HAVE FUN!
The cables are directional and have arrows. It is important that you install them correctly. No, it should not matter which coupler plugs into the cable. Many said that SR cables improve with the Quattro that can power all the cables. I use a PS Audio Power Plant Premier and have the couplers plugged into regenerated power. There was an improvement in supplying better power to the cords.
Give SR a call they are very nice and love taking about their cables and giving tips on how to improve the sound.
HAVE FUN!