Tube amps always have a high output impedance(low damping factor). This interacts with the varying impedance with frequency of all loudspeakers to produce frequency response variations which would not be there with high damping factors of most solid state amps. The lower the resistance of speaker cables the better to minimize this frequency variation. Of course this doesn't mean low resistance and forget inductance and capacitance. All other factors also matter.
Speaker cable recommendations
I have a tube preamp with SET tube amps. Currently my IC’s are Audio Sensibility Statement RCA’s. I’m looking for new speakers cable that are light, flexible and that would have synergy here. Budget under $1k
previously I’ve enjoyed Audio Sensibility and Cerious speaker cables, but they are too bulky and heavy. So maybe something with similar performance but thin and flexible. As I’ve been reading I’m thinking I’d like something with air dielectric.
some options that have popped up could be
Grover Hoffman Pharaoh
Audio Envy SP12
Zenwave SL17
looking forward to sow ideas.