Cables for B&W and Rotel system.

Synergistic Research Alpha Active are good if you are on a budget. The Signature 10 active are where I would go for the next step up.

When I was a B&W owner, I tried hard, very hard to get B&W to answer this question for me. No real luck. I asked the question in many ways including what equip. B&W used @ shows.
Thru some painful digging of info, I found that B&W had/has a soft corner for Kimber. I *think* that there is collaboration between Kimber & B&W in England (maybe even Europe).
I personally used TARA Labs Master Gen II with great success. I still own these cables & use them with my present speakers. FWIW. IMHO.

kimber speaker cables works very well with B&w. I've tried audioquest slate, acoustic zen hologram ii, synergistic 10x, bifocal xl is the best. detailed, smooth, lots of texture.

I second the Tara Labs recommendation. I too own B&W speakers and Rotel equipment. I've used Tara Labs, Monster Cable, and Acoustic Zen. The Tara's gave me a bigger soundstage, and much better bass response and fullness than anything else I've tried. They also tamed any kind of harshness to be said about the metal B&W tweeter, without rolling off the top end or ruining the the 'air' or openness in the treble region.

Using cables, or any component as tone control is futile endeavor, the 'connoissseurs of coloration' notwithstanding.

If you love music, and want to hear, as accurately as possilbe, what the artists created on their insruments in a given environment through an electronic playback system in the privacy and comfort of your own home, find transparewnt speakers, apporpriate to the space they will operate in, power them with as low distortion amp as you can find (appropraiately sized to the speakers), and work on the setup and room acoustics.

You will then hear an annoying variety of sonic characteristics among the various source material in your collection. Even from track to track. The degree of distortion of many will now be intolerable.

I believe the only rational approach from here is to be selective of the recored source material you play. After all, now you can hear the difference.

Rather than use your system in a futile attempt to mix out qualities you do not like recordings, what, generally? For instance, you get it right for one recording, how are you going to adjust for the next? Absurd. And all the while you are tuning your system to mask the sonic superiority of those few recordings that are so life-like that you do not wonder why you are an audiophile.