As for bi-wiring, I know there are different opinions on the topic. For me here the order in term of improvement:
1. Single run but larger gauge wire
2. Smaller gauge wire but bi-wire
3. By amp
For me, going from 1 to 3, the most difference was in the soundstage focus, in which the images are easier to see.
There are those who think the improvement of bi-wire comes mainly from the overall larger combined gauge, but personally I see the advantage comes from the bi-wiring itself.
1. Single run but larger gauge wire
2. Smaller gauge wire but bi-wire
3. By amp
For me, going from 1 to 3, the most difference was in the soundstage focus, in which the images are easier to see.
There are those who think the improvement of bi-wire comes mainly from the overall larger combined gauge, but personally I see the advantage comes from the bi-wiring itself.